Literature Reference: 'Yi' refers to the game of Go, from 'Shuowen Jiezi'. 'Han' means to contain, also from 'Shuowen Jiezi'.
弈: Engaging in a game of chess, the forest of strategy. Often refers to the "chess" in the four arts of the Chinese scholar—music, chess, calligraphy, and painting. It embodies both virtue and talent, symbolizing a love for learning and moral integrity.
函: The term refers to a letter and its envelope.
Meaning: Yi symbolizes wisdom and strategy, while Han signifies tolerance and cultivation, representing a wise and broad-minded individual.