Who are the three most important eastern philosophers?
Eastern philosophy
The "Dao De Jing" ("Tao-Te-Ching," c. 4th century BCE), traditionally attributed to Laozi, and the "Nan Hua Jing" ("Zhuang Zi") are considered the key texts of the tradition. The first organized form of Taoism, the Tianshi (Celestial Masters') school arose in the 2nd century CE. Xuanxue ("deep learning", also "Neo-Taoism") was a major philosophical movement influenced by Confucian scholarship, which focused on the interpretation of the "Yijing," "Daodejing," and "Zhuangzi" and which flourished during the third to sixth centuries CE. The most important philosophers of this movement were He Yan, Wang Bi, the Seven Sages of the Bamboo Grove, Ge Hong and Guo Xiang. Thinkers like He Yan and Wang Bi focused on the deep nature of Tao, which they saw as being best exemplified by the term "Wu" (nothingness, non-being, negativity).
Taoism
Ideological and political rivals for centuries, Taoism, Confucianism, and Buddhism deeply influenced one another. For example, Wang Bi, one of the most influential philosophical commentators on Laozi (and the "Yijing"), was a Confucian. The three rivals also share some similar values, with all three embracing a humanist philosophy emphasizing moral behavior and human perfection. In time, most Chinese people identified to some extent with all three traditions simultaneously. This became institutionalized when aspects of the three schools were synthesized in the Neo-Confucian school.