1. Emperor Kangxi was the fourth emperor of the Qing Dynasty. His eight characters are Geng Zinian, Ren Xuyue, Geng Xuri and Ding Weishi, among which, due to the lack of the words A and B, it is considered as one of the typical cases of four wastes of eight characters.
2. Qian Zhongshu is a famous scholar and writer in modern times. He has eight characters of Xin Maonian, Jia, Ding Youri and Ji Youshi, among which A and B are also missing, but he has made great achievements in the fields of culture, education and research.