The plaque of hall of mental cultivation West Nuan Pavilion in the Forbidden City was inscribed by Yong Zhengdi. The existing ink in Yong Zhengdi is a rare treasure in imperial calligraphy of past dynasties, because its strokes are neat, steady and beautiful. Yongzheng emperor's inscription "Diligent Sage" is located in the West Warm Pavilion in hall of mental cultivation, indicating that the emperor was strict with himself all his life. This rubbings are now in Luoyang Rubbings Museum.
Function of plaque
Spleen plaque plays the role of advertising and also promotes corporate culture. After the completion of ancient buildings in China, plaques are often hung to make the finishing touch to the buildings. Everyone has a name after birth, so ancient buildings should also have names as code names. The function or function of the plaque is mostly related to the content of the plaque, and their content often indicates their use.