Why are CEOs not active on social media? It is increasingly critical for CEOs to not only be physically present at work but also be virtually present in the digital sphere. However, many CEOs are still reluctant to adapt social media or struggle to find the efficient approach to incorporate the tools into their communication strategy. The study explores how CEOs orient themselves in the digital world and make sense of social media. In particular, based on the view of impression management and institutional work, the research examines how CEOs translate their understanding into communication and selfpresentation strategies and activities. The results from 31 in-depth interviews with Chinese and Dutch CEOs suggest that leadership communication on social media is still going through the process of legitimisation in both institutions. Despite the growing popularity of personal branding, most CEOs do not interpret social media as the outlet for their personal and private use or independent from the organisational identities. While most CEOs champion the necessity of digital transformation for their organisations, they do not see clearly how their personal digital habits could potentially influence the process, despite their leadership roles. They typically identify social media as the functional platforms for information circulation and network connection. Multiple narratives and orientations do, however, coexist and they dictate social media decisions simultaneously depending on the context. There is also a prominent difference between the narratives of social media in the Netherlands and in China. Most Dutch CEOs wish active engagement from the organisations but practice passive roles themselves, while most Chinese CEOs are active for both personal and organisational use pressured by the intuitional norms. The research highlights the significance of cultural context regarding leadership communication even on social media. Given most platforms are designed, and arranged to have an international audience, CEOs and companies should be aware of distinctive norms and beliefs they are operated in the different societal institutions.

The aim of this study was to investigate the relationships between eating habits and health among adolescents in Shanghai and Heze, China. A cross-sectional study was conducted in 2013 on 2,089 adolescents; 1,089 students were from Shanghai and 999 students from Heze region. Eating habits, weight, height, and nutritional knowledge were assessed using a self-administered questionnaire. Eating habits score was classified into two categories: healthy eating habits and unhealthy eating habits, based on「Korean Youth Risk Behavior Web-based Survey」, for statistical data analysis. Associations between eating habits, BMI, and nutritional knowledge were examined using a general linear model with adjustment of potential confounding factors such as region, gender, age, parents’ education level, and pocket money. Statistical analyses were performed using the SAS (version 9.3) program. Proportions of healthy eating habits group were 90.0% for breakfast (3-7 times/wk), 29.1% for fruit (≥once/d), 12.5% for vegetable (≥3 times/d), 7.3% for milk (≥2 times/d), 90.0% for fast food (<3 times/wk) consumption, respectively. The average BMI score was 20.1 (Shanghai 20.5 Heze 19.6), which is in the range of normal weight. Rates of obesity and overweight were 16.5% and 8.3% in Shanghai and Heze, respectively. There were significant negative correlations between intake frequencies of breakfast, fast food, biscuits, sugar, chocolate, and BMI score. Eating habits and nutritional knowledge score showed a significant positive correlation. These results showed better eating habits regarding eating regularity and consumption of fruits and soft drinks in Chinese adolescents compared with Korean adolescents, although cultural differences were not fully considered. This study demonstrated significant associations of BMI and nutritional knowledge with dietary behavior in Chinese adolescents in two regions of China. Further studies on Chinese adolescents from other regions in China should be considered.