祖: The founder of a career or school of thought, the ancestral lineage, or the motherland. In a name, it often conveys the meaning of a bright future, bringing honor to one's ancestors, and is beneficial for career advancement and academic pursuits.

乐: Happiness, joy. The character "Ji" is auspicious and signifies a carefree, cheerful, and comfortable life, often used in names to convey a sense of ease and contentment.