Falun Gong is staunchly anti-communist but I wouldn't call it a Christian cult. I got quite interested in them ~20 years ago and obtained their books to see what they were about. From what I recall it was almost all watered-down Tai Chi mixed in with constant emphasis on the founder's supremacy. Whereas Tai Chi regards the navel/core as the center of the body from which all bodily processes and martial art energy originates, and which can be trained through exercise, Falun Gong asserts that a symbiotic being called a 'Falun' is inserted in disciples by Li Hongzhi or his delegates, and practitioners are then taught exercises to 'maintain' it. Tai Chi practitioners I've met regard this as a perverse grift. Their literature had a lot of sci-elements reminiscent of scientology; perhaps the founder recognized a winning formula and adapted it to the Chinese market. I think he fled China and lives in NYC now.