How many types did traditional Tai Ji Chuan learn at the earliest?

It's not a question of what to learn first. But to find which one to learn and which to learn. I suggest that if you have the conditions and the guidance of experts, you should learn from the old rules first, and then from the Second Artillery Corps. Competition routines are only for performance and promotion, and are adapted by modern people. What really becomes a system is the old shelf. It takes at least a few years to learn a set of routines, and it is not good to learn well or not. Learning more is not as good as learning well. Tai Chi Kung Fu is very advanced. The so-called infinite levels, don't be satisfied with grasping the movements in general. This is still far from it.