Before Jin (秦) period, Oriental (Eastern) culture was established in Korea different from China. Bulgogi (babecued beef, 貊炙) and legume fermented soy were transmitted into China. Afterward, alcohol drink, rice cake and cookie, shic-hae (lactic acid fermented fish products), Kimchi (fermented vegetable) were introduced and modified for Korea. Buddhism was transmitted to Korea through China, but selective animal was used as food. Later period of Koryo Dynasty, meat-eating become common due to mongorian influence and distilled spirits was introduced by mongorian. During Chosun Dynasty, table setting of spoon and chopstick was established, due to Confucian influence, dog eating, raw fish and raw meat eating became popular and nutrition for elderly was developed, whereas tea culture declined. In recent period (under the Japanese rule) Chinese introduced chinese noodle, chinese cuisine, chinese pancake and sun-dried salt. many chinese cultivated chinese vegetables.

Even though it is well known that the tidal current in the East China Sea rotates clockwise, few report can be found about the precise pattern of it. To furnish some information available for the stow net fishermen, the author carried out the observation over 235 semidiurnal tidal cycle to investigate the pattern of the set and the rate of tidal current in the Korean fishing section 250 and 494, by reading the current meter and by tracing the corner reflectors with radar onboard the anchored obsen'ation vessel, from May 12, 1984 through February 27, 1986. The results obtained are as follows: 1. The mean semidiurnal tidal cycle was 12 h 20 m during spring tide, and 12 h 30 m during neap tide. 2. The mean interval from the calculated time of high water until the current began to set north was 2 h 30 m and 2 h 15 m in the fishing section 250 and 494 respectively, and the mean interval from the time of low water current began to set south was about 2 h 0 m in both sections. 3. In comparison of the occupied times to vary the set from one of 8 principal bearing points to the neighboring one, the shortest was while the set varied from N to NE and S to SW in the section 250 and 494 respectively. Contrary the longest was while the set varied from SE to S and from W to NW in the section 250 and 494 respectively. 4. In comparison of the rate while the set varied from one of 8 principal bearing points to the neighboring one, the fastest was while the set varied from SE to Sand NW to N in the section 250, and E to SE and W to NW in the section 494. Contrary the slowest was while the current set to NE and S W in the section 250, and N, NE and S W in the section 494.

The circulation of the Yellow Sea and the East China Sea is simulated by means of the two layer numerical model with bottom topography: The circulation inside the Yellow Sea is mostly affected by the Kuroshio Current in the case without the wind stress exerting on the surface. The main current is trapped along the continental slope by the characteristics of geostrophy. The second strong current region is appeared from the southern coast of the Ghina to the Korea Straits, which is characterized the western boundary current. The circulation inside the Yellow Sea is rotated in clockwise direction even though its magnitude is negligibly small compare with the other current, for example, the tidal residual current.

By use of C. S. K. summer (1977) and winter (1974) data, the distribution of water types in the East China Sea is studied. In summer, it is classified into the Yellow Sea Cold Water, the Coastal Water, the East China Sea Water, the Mixed Water, the Tsushima Warm Water, and the Kuroshio Water. Seasonal thermocline and halocline appear strongly in the surface layer of the Yellow Sea Cold Water and the Coastal Water, and the maximum value of dissolved oxygen exists at the depth at which seasonal thermocline shows up. The Coastal Water which is formed by mixing with the outflow fresh water of the Yangtze River distributes itself at the surface Iayer because of the lower density. On the other hand, in winter, the Coastal Water does not appear and the characteristics of the Yellow Sea Cold Water and the East China Sea Water are homogeneous vertically. This is because the surface water is mixed vertically with the influence cooling. In both seasons, the Mixed Water appears in the marginal region of the continental shelf and in the continental slope. We can see that the Tsushima Warm Water and the Mixed Water are almost plotted on the same region in the temperature-salinity diagram. The Tsushima Warm Water does not originate from the main flow of the Kuroshio, but from the Mixed Water on the marginal region of the continental shelf and the continental slope.

동지나해에 있어서 고등어류 어획량 즉 자원량 변동에 따른 어장분포범위의 변동상태를 파악함과 동시에 이에 따른 환경변화와의 관계를 조사하였다. 어획자료는 일본국 농림성조사부 및 국립수산진흥원의 해구별 선망어획량 통계자료를 사용하였다. 이중에서 어획량이 적었던 1968년, 가장 많았던 1974년과 그 후 다시 적어졌던 1980년에 대하여 어획량을 계절별로 집계하여 분석하였다. 해양관측자료는 일본기상청과 국립수산진흥원의 자료를 사용하였다. 그 결과, 고등어류 어장분포는 어느 계절이나 3개년 모두 동지나해 중앙부를 중심으로 북동부와 남서부로 분리되었다. 또한 동계와 춘계에는 쿠로시오역 내측에 폭이 좁은 띠모양[대상]의 어장이 형성되었다. 어군의 북상시기인 하계와 남하시기인 동계에는 한국연안과 쓰시마난류역을 따라서 어장이 형성되었다. 어장분산은 하계가 제일 크고 춘계가 가장 적었으며, 누년 큰 변동이 없었으나 자원량이 많았던 1974년 이후인 1980년이 가장 컸다. 어장의 집중과 분산은 수온약층과 수온의 수평기울기의 크기와 관련이 있었다.

동지나해.황해의 저층에 서식하는 강달이 어장의 형성구조와 그 변동에 미치는 해양환경의 영향을 구명하기 위해 안강망에 의한 어획통계자료(1970~1979)와 해양관측재료를 이용하여 어장의 계절별, 경년별 변동을 검사한 결과 다음과 같다. 강달이 어획율의 약 70%가 집중하고 있는 중요어장은 대흑산도와 Sokotra Rock 주변해역이었다. 또한 이들 해역은 CPUE가 비교적 크고, C. V.가 0.9~1.4로서 작게 나타나 어황이 안정된 좋은 어장을 형성하고 있었다. 주어기는 2~3월과 6~7월이었으며, 1974~1976년의 주어기 CPUE는 평년의 약 2배 이상이었다. 중심어장의 분포역은 평균수심 50m 내외의 황해저층냉수와 대마난류와의 사이에 형성되는 조경역이었으며, 수온 및 염분은 각각 10~13℃, 32.5~34.4‰ 이었다. 주어장은 주로 황해 저층 냉수괴의 연변에서 형성되고, 이 수괴의 소장에 따라 계절변동을 하고 있었다.

The large two-boat trawl is of importance in Korean fishery. It occupied 12.8% of total catches in 1974. The author analysed the reports of six large two-boat trawlers operated at the Yellow Sea and the East China Sea, in the term from September 1975 to March 1976. The results obtained are as follows; (1) 1,710 of total hauls are operated in the term, and the total catches amounted 559, 181kg. Then, 325kg of catch per unit effort (C. P. U. E) are obtained. The catches are specified into 28% of soles, 12% of shrimp, 8% of yellow corvenia, hair tail, kang-dari, and the rest of miscellanous fishes. (2) C. P. U. E. of the southern sectors of the Soheaksan Is. represented superior catches to compared with others sectors. (3) The monthly variation of C. P. U. E. between sea eel and yellow corvenia revealed positive correlation, whereas between sole and shlimp, between hair tail and rays revealed negative correlation respectively.

Yellow croacker, Tseudociaena manchurica Jordan et Thompson in the Yellow Sea and East China Sea are subjected to be caught by trawl nets throughout the year. First indices of population size in every period 8re calculated. Considering present status of the yellow croacker fishery and ecology of the fish, mathematical models must have been established in order to determine catchability coefficient, natural m ortali ty, fishing mortality, recrui ting coefficient of the fish ing ground, and dispersion coefficienl from the fishing ground. The results an, summmarized as follows: Catchabil i ty coefficient (C) = 2. 2628 × 10-5 Natural mortality (M)=0.3293 Population for lhe first half season(July 1st to the following January 3lst) Initial population = 14, 621 /MT Recruitment =45, 597 /MT Natural mortality = 8, 660 /MT Final population =42, 970 /MT Population for the latter 1131f scason(February 1st to June 30th) Initial population = 69, 170 /MT Dispersion =51, 688 /MT Natural mortality = 6, 082 /MT Final population = 1, 802 /MT.

South Korea is one of the important export markets for China’s textiles and apparel in the East Asian region. This paper uses Eviews software, selecting labor costs, South Korea’s GDP, foreign direct investment, and the real effective exchange rate as explanatory variables, to conduct an empirical analysis of the factors affecting China’s export trade value of textiles and apparel to South Korea from 2000-2020. The regression results show that South Korea’s GDP, foreign direct investment, and the real effective exchange rate have a significant positive correlation with China’s export value of textiles and apparel to South Korea; labor costs have a significant negative correlation. Based on the results of this empirical analysis, the paper proposes relevant recommendations.

Small and micro enterprises are an important part of China’s national economy, and the Chinese government attaches great importance to their important role in promoting supply-side structural reform, promoting high-quality development, and building a modern economic system. The difficulty of financing is the main factor restricting the development of small and micro enterprises. Poor debt financing, lack of shareholder support, operational characteristics of small and micro enterprises, deleveraging policies, Sino-US trade frictions, etc., are the main reasons for the financing difficulties of small and micro enterprises. Measures such as standardizing the operation of small and micro enterprises, improving the financial service system, improving the management system, improving the mortgage guarantee ability, and enhancing the risk identification ability can be taken to alleviate the financing difficulties of small and micro enterprises.

Aquatic products have been exported and exported in large quantities as they provide high-quality protein, promote brain development and maintain cardiovascular health. China’s exports of aquatic products will reach 21. 926billion U. S. dollars in 2021, up 15. 31 percent year-on-year and 23. 03 billion U. S. dollars in 2022, an increase of 5. 04 percent year-on year. Based on this background, this paper will analyze the export structure of Chinese fisheries products based on HS code and analyze the competitiveness of Chinese fisheries products through trade competition index (TC). The paper points out the existing problems in China’s export of fishery products to Korea and puts forward a targeted and effective development strategy.

Purpose - In 2022, the United States introduced Creative Helpful Incentives to Produce Semiconductors for America Act, which strengthened the export control on China’s chips, semiconductors, and other products. The scientific and technological relation between China and the United States is in a tense state, which has a negative impact on the complementary development of technology between China and the United States, as well as the development of China’s semiconductor industry. In the current situation of the scientific and technological relation between China and the United States, this paper hopes to play a certain reference role in the faster and better development of China’s semiconductor industry. Design/Methodology/Approach - This paper uses literature analysis, qualitative analysis and case analysis to elaborate on the general situation of the semiconductor industry and the development process of China’s semiconductor industry under the global semiconductor industry, and analyzes the development, present situation and future of Sino-us scientific and technological relations. Findings - This paper discusses the development problems and opportunities of China’s semiconductor industry under the Sino-US science and technology relations, and puts forward the development strategy of China’s semiconductor industry under the Sino-US science and technology relations. This paper can bring enlightenment to the development of China’s semiconductor industry under the Sino-US science and technology relations. Research Implications - Through the study of the development opportunities and strategies of China’s semiconductor industry under the Sino-US scientific and technological relation, Chinese semiconductor enterprises can better cope with the impact of the United States on the development of China’s semiconductor industry, grasp the development opportunities of the semiconductor industry, and achieve the development goals of the semiconductor industry in the difficult situation.

With the annual increase in the production and distribution of fresh agricultural products and the rapid development of China’s e-commerce business circle, while the huge online transactions need the support of offline logistics services, a series of problems such as violent screening in the logistics industry still need to be solved. Therefore, how to improve the quality of logistics services and make consumers satisfied is an urgent problem for the licensee. Based on the SERVQUAL service quality evaluation model and LSQ logistics service quality model, an evaluation model of the impact of fresh agricultural cold chain logistics service on customer satisfaction was constructed from four dimensions of reliability, visibility, information and service flexibility. This paper clarifies the relationship between consumer satisfaction and provides a basis for improving cold chain logistics service quality, including studying the evaluation of consumers’ purchase of fresh products on the Internet and establishing logistics service quality indicators. In this study, the analysis results generally have a significant impact on logistics service quality (+) and customer satisfaction. According to the characteristics of consumers, the impact of cold chain service quality on customer satisfaction may vary.

It has been 30 years since the establishment of diplomatic relations between China and South Korea, and South Korea is one of China’s most important trade partners in Northeast Asia. However, with the change in manufacturing competitiveness, the global value chain position of China and South Korea, and the rise of anti-globalization and trade protectionism, the trade between China and South Korea has also suffered a significant impact. This paper first used the international market share and trade specialization coefficient to make a quantitative comparison of the competitiveness of the primary industries of China and South Korea. Then it measured the trade integration index and export product similarity index of China and South Korea. It is found that: although China and South Korea have a particular competitive relationship in the main industrial fields, the differences in their respective areas of strength are significant, and the two countries show a good complementarity of resources. Therefore, China and South Korea should abandon suspicion, strengthen mutual trust, further optimize the trade structure between the two countries, make use of the framework of the regional agreement of RCEP, support China and South Korean enterprises to jointly develop the third-party market, and maintain and consolidate China-South Korea relations to promote the long-term development of economic and trade cooperation between the two countries.

With the rapid growth of nuclear power in China, a large number of dry wastes, which mainly include the high efficiency particulate air filters (glass fiber), cotton, polyethylene, and absorbent paper with low-level radioactivity and high volume, will be produced during the operation and maintenance of the nuclear power plants. Thermal plasma treatment is a world acceptable technology to incinerate and immobilize radioactive wastes, owing to the high volume reduction factor and the excellent chemical durability of the vitrified waste form. China has developed thermal plasma technology for the treatment of dry wastes from nuclear power plants for more than 15 years and the pilot plant has been constructed. This work will concentrate on the formulation of waste glass fiber to adapt to the vitrification process. A three-component (glass fiber-CaO-Na2O) constrained-region mixture experiment was designed and their viscosity data was mainly studied. The quadratic Scheffé model was used to plot the component effect on melting temperature. The retentions of simulated nuclides, such as Co, Sr, and Cs in the glasses were analyzed. In addition, the glass fiber as a glass matrix to immobilize residual ashes from the thermal plasma gasification of cotton, polyethylene, and absorbent paper was investigated as well.

Under the background of economic globalization, the trade between countries in the world is increasing rapidly. Under the rules of WTO, the tariff rate of trade barriers is decreasing, but on the other hand, nontariff barriers are increasing. especially Compared with tariff barriers, green trade barriers have a greater impact on agricultural trade. Therefore, the negative impact of green trade barriers on agricultural products trade is a problem worthy of attention and urgent response in the future agricultural products trade between China and South Korea. Firstly, this paper analyzes the meaning and characteristics of green trade barriers, introduces the current situation of agricultural products trade between China and South China, analyzes the influence of Korean trade barriers on’s agricultural products export trade, and on this basis, forms countermeasures to promote Chinese agricultural products export to South Korea. The research of this paper has certain guiding significance for promoting Chinese agricultural export trade to South Korea.

Analyzing and comparing the digital trade rules of free trade zones such as the European Union (EU) and North America is significant for the localization of China’s digital trade rule system. In this paper, the significance of digital trade rules is demonstrated by analyzing and comparing the characteristics of digital trade rules in each regional agreement. Through analysis of the digital trade rules of each region, it is proposed that the construction of digital trade rules in China needs to be based on promoting the development of digital economy, strengthening the protection of digital security and improving data crossborder circulation rules.