The calligraphy of Zhu Xi had been acclaimed as acquiring the style of the Han and Wei dynasties. He was skillful in the central tip, and his brush strokes are smooth and round, steady yet flowing in the movements without any trace of frivolity and abruptness. Indeed, his calligraphy possesses stability and elegance in construction with a continuous flow of energy. Without trying to be pretentious or intentional, his written characters are well-balanced, natural and unconventional. As he was a patriarch of Confucianism philosophy, it is understandable that his learning permeated in all his writings with due respect for traditional standards. He maintained that while rules had to be observed for each word, there should be room for tolerance, multiplicity and naturalness. In other words, calligraphy had to observe rules and at the same time not be bound by them so as to express the quality of naturalness. It is small wonder that his calligraphy had been highly esteemed throughout the centuries, by great personages as follows: