Mr. Cai was a professor of Chinese in China, teaching the Chinese language to foreign students since 1984. He also taught media production. He has an extensive knowledge in Chinese literature and culture. With his dignified manner he seems to exemplify the expression of traditional Chinese culture. And then as we look beyond his reserved demeanor we see his caring for his students expressed in the time and energy he puts in to work with them and help them deeply understand the lessons, shaping his teaching to fit the needs of each student.