The development of Nom characters is promoted on the basis of and in attachment with Chinese characters, and in this regard the Phonetic Annotation of the Thousand Character Classic 《千字文解音》 compiled in the late Nguyen Dynasty in Vietnam was a very practical textbook for learning Chinese characters and Nom characters. Based on categorizing Nom characters, the paper intends to clarify several notions on Nom characters of the Phonetic Annotation of the Thousand Character Classic. In the beginning, Nom characters can be divided into two major types: the directly borrowed Chinese characters and the independently invented ones. The former includes borrowing sounds, meanings, and both. The latter, according to the components of Chinese character formations, can be divided into the pictophonetic of Chinese characters and that of Nom characters. In the last part of the article, we summarize the relationship between Chinese characters and Nom characters. It is necessary not merely to consider the relationship but to understand the comparisons between them. With the aid of studying Nom characters, we can find that irrespective of whether they are directly-borrowed from Chinese or independently invented, the sound of Chinese characters is the most important feature for them. But we cannot ignore the ideographic parts of Nom characters because they, on the one hand, make up the phonetic deficiency of Chinese characters while promoting the development of Nom characters on the other. In our modern society, Chinese characters and Nom characters came to drift apart, and the latter especially was withdrawn from the historical stage, but the traditional culture of Vietnam is still recorded in literature both in Chinese characters and Nom characters. Moreover, the Nom character is one of the most important representatives of Vietnam’s traditional culture. For this reason solely, this research shall be a great help to further understanding of significant cross-cultural aspects between China and Vietnam, and more specifically of histories related to the spreading, application, and development of Chinese characters in Vietnam.

The use of wine vessel Measure words in ancient Vietnamese inscriptions is very complicated. These characters are some examples which are recorded wine vessel quantifier in ancient Vietnamese inscriptions, such as, yu (􄘃)􀉾yu (􂙪)􀉾yu (􃮚)􀉾yu ( )􀉾yu ( )􀉾bo (􆆣)􀉾bo ( )􀉾bo ( )􀉾 cheng (􂜖)􀉾cheng (􂎉)􀉾xiu (􄻟)􀉾xiu ( )􀉾xiu ( )􀉾xiu ( )􀉾xiu ( )􀉾 xiu (􁼯)􀉾hu (􂠻)􀉾hu (􂠸)􀉾hu (􅀢)􀉾ping (􂚫)􀉾lu (􇿪)􀉾weng (􄑖)􀉾zhai (􆺌)􀉾 zhai ( )􀉾jing (􂫒)􀉾ping (􂞁) and zun (􃥾). Above words are compared and analyzed with the use of wine vessel measure words in Chinese. We found measure word Characters for Vietnamese wine vessel are influenced by China. This kind of phenomena reflects Chinese character being studied imitated and innovated by Vietnamese in the course of spread.