Literature Reference: 走劝刘虞作天子，刘虞不敢作天子。—— 《相和歌辞 董逃行》 They urged Liu Yu to become the emperor, but Liu Yu dared not. Source from 'Xianghe Geci: Dongtao Xing'.
刘: The family name, used in names, carries no particular significance.
虞: Anticipation and Omen.
Meaning: Liu Yu was humble and virtuous, not coveting power or wealth, embodying noble character and integrity.