Gaokao, or China's national college entrance exam, has been held across the country this week. Meet Zhang Guimei, a 66-year-old renowned teacher devoted to improving girls' education in mountainous areas.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
