Who are Kang Nanhai and Li Hefei?

Kang Youwei:

Kang Youwei (1858 ~ 1927), also known as Zuyi, whose word is Guangsha, whose name is Chang Su, also known as Ji Geng, Xiqiao Mountain, Youcuncuo and Hua Tianyou, was a native of Nanhai, Guangdong Province in his later years, and was called "Kang Nanhai".

Li Hongzhang:

Li Hongzhang (1823- 190 1), a native of Hefei, Anhui Province, was originally named Li, also known as Li Hefei, whose real name was gradually blessed or Shao Quan (full). In his later years, he became a musical instrument, and his other name was trouble.