In ancient China, there was an allusion to "San Xiao in the Tiger Creek", which told the story of a Confucian Tao Yuanming, a Taoist Lu and a monk Hui Yuan, who forgot to return after tea.

Analysis of test questions: Tao Yuanming of Confucianism, Lu of Taoism and Hui Yuan, a monk, belong to different periods. The fiction of the story of enjoying tea together and forgetting to return shows that the culture of Confucianism, Taoism and Buddhism exists according to * * *, which embodies the trend of integration of Confucianism, Taoism and Buddhism. The introduction of Buddhism item B into China occurred in the Western Han Dynasty, and the time did not match, so it was wrong; The prosperity of a poem creation has little to do with materials; The statement that the painting style of item D is mainly realistic is not in line with historical facts, and the painting style of Tang and Song Dynasties, especially the Song Dynasty, is mainly freehand brushwork. So choose item a.