This group of sculptures, titled "Rent Collection Courtyard” , it is a sculpture created on the eve of the Chinese Cultural Revolution, their content is to describe the exploitation of the peasant class by the landlord class. What are the sources of our historical knowledge? In different versions of history, the good and evil of a character may be placed in very different positions. How should we view history? The empathy also seems to be the recognition of the position of the writer of history.