Have you read this?
"Shaolin Lohan (Luohan) Quan, Tai Tzu Chang Quan, and Taiji Quan (originating from Chen village), all represent a very ancient history of Chinese martial arts that are associated with health and mental well being besides physical fitness and self-defense. By the time the grand Emperor Chao Kuang-Yin had visited Shaolin temple during the early Sung Dynasty and gifted them with a series of books that contained his own Chang Quan and Hong Quan forms and other martial art ideas, Shaolin already had hundreds of years of chi gung and martial arts development under its belt via its creation of the Lohan style..."
http://ymaa.com/articles/2016/05/the-hi ... -taijiquan