This is a Chinese name; the family name is Xi.

Zhu Xi or Chu Hsi (Chinese: 朱熹, 18 October 1130 – 23 April 1200) was a Confucian scholar during the Song Dynasty. Zhu Xi was one of the three most important Confucian philosophers. He organized the classic works of Confucianism and contributed to the philosophy of Neo-Confucianism.He was from Fujian province in China.