Narrated in Chinese, an old professor from Beijing University, at end of Qing dynasty, Republic and early People's Republic of China, tells about what a Ru-ism is doing: follow mass scribes, note strange or fresh bugs and fishes, chant spring wind and autumn moon with head and tail rotating, also explore the reason of country governance peace or war, explore the root to decide mass's living condition, in a light and natural way, touch you softly in tears...