朱子 Traditional form: 朱子 Pinyin (reading): Zhūzǐ Definitions: Master Zhu, another name for Zhu Xi 朱熹 ( Zhū Xī) Characters: 朱 - cinnabar, vermilion; surname 子 - son, child; seed, egg; fruit; small thing Traditional characters: 朱 - cinnabar, vermilion; surname 子 - son, child; seed, egg; fruit; small thing