2. Yusanjia, a social term, comes from the Edo period in Japan. Originally, the Tokugawa family, Jizhou Tokugawa family and Shuitokuan family were separated and had the right to inherit foreign generals, except Tokugawa family. Now this concept extends to Pokemon, seiyuu and even e-sports.
At present, this word is mostly used to refer to the three most influential people or forces in a certain field. It is equivalent to the three giants and three masters of Chinese.