[1] He was also considered an accomplished Neo-Confucian and Taoist scholar (especially of the I Ching), and was a distinguished contributor to the theory of internal martial arts through his many published works.

Years later, his baguazhang teacher Cheng Tinghua gave him the name Sun Lutang.

He was also well-versed in two other internal martial arts: xingyiquan and baguazhang before he came to study tai chi.

[1] Sun started studying with Hao relatively late in his life, but his accomplishments in the other two internal arts led him to develop his tai chi abilities to a high standard more quickly than is usual.

[2] Sun taught there until 1928, a seminal period in the development of modern Yang, Wu and Sun-style tai chi.