Literature Reference: 子余，字子思，孔子之孙。—— 《史记·仲尼弟子列传》 Zi Yu, also known as Zi Si, was the grandson of Confucius. Source from 'Records of the Grand Historian: Biographies of Confucius' Disciples'.
子: Descendants, offspring. It also refers to the favored children of heaven, those who are learned and virtuous.
余: Surplus, a metaphor for a life of abundance and prosperity.
Meaning: Zi Yu signifies wisdom and inheritance, symbolizing the continuation and promotion of Confucian thought.