颜真卿
Zhu Xi had, from an early age, followed his father and a number of great calligraphers at the time in practicing calligraphy. At first he learned the style of Cao Cao, but later specialized in the regular script of Zhong Yao and the running cursive script of Yan Zhenqing. Though his manuscripts left to the world are piecemeal and incomplete, and most of his works are lost. Moreover, his fame in the realm of philosophy was so great that even his brilliance in calligraphy was overshadowed. He was skillful in both running and cursive scripts, especially in large characters, but extant artworks consist mainly of short written notes in running script and rarely of large characters. His authentic manuscripts are collected by Nanjing Museum, Beijing Palace Museum, Liaoning Province Museum, Taipei Palace Museum and the National Museum of Tokyo, Japan. Some pieces are in private collections in China and overseas. The "Thatched Hut Hand Scroll", one of Zhu Xi's masterpieces in running-cursive script, is in an overseas private collection.