As my research into Tai Chi progressed, I discovered the older Yang Tai Chi. The founder of Yang Tai Chi had two sons. The older son had his own school where he taught the full version of this style. This is a simplified version. It is not such a common style and not many people know about it. By the way the younger son had a son or the founder's grandson who created the common version of Yang Tai Chi today.

Short video 1:09min, long video 2:52min