Literature Reference: Zhong Gong asked about Zi Sang Bozi, and Confucius replied, ‘He is simple.’ Zhong Gong said, ‘To be respectful yet act simply in governing the people, is that not appropriate? But to be simple in both dwelling and action, would that not be too simple?’ Confucius said, ‘Yong’s words are correct.’ — From 'The Analects: Yong Ye'
行: Proficient in a certain matter, it generally signifies smooth progress in all affairs, with the character "Zhi" carrying auspicious connotations.
简: In contrast to "complexity," it signifies simplicity and lack of intricacy. Additionally, "简" refers to the bamboo or wooden slips used for writing in ancient times.
Meaning: ‘Xing Jian’ means to act with simplicity, neither overly complicated nor lacking in solemnity, embodying the wisdom of the golden mean.