1, Yi, Pinyin: y √, first seen in inscriptions of the Western Zhou Dynasty. The original meaning is brave and decisive, and the extension means cold and severe. In Go, it also refers to the ending of chess.

2. "Yi" group words:

Perseverance, determination, perseverance, loyalty, Zhuang Yi, Qingyi, Mengyi, Yise, Hongyi, Yibo, Kangyi, Yilie, Kuiyi, Bianyi, Rouyi, Guo Yi, Quyi, Enoch and Hongyi.