Tai chi is a way to open up your awareness to these things that made up the whole being. We are complex and tai chi is a way of navigating the complexity. It frames out an approach to learning. Built into the movements themselves are signs for how to learn them.
That has to do as far as I can tell, with focusing the attention, and focusing it on one thing at a time, at least in the beginning—in the beginning of practice over period of time and every time you stand in wuqi and begin a practice session.
What is meant by “attention”? I can’t say entirely, but I do think our senses make up its components. Tai chi is a way of using our senses, improving them and how we use them, helping them to function better. From this viewpoint it’s easy to see how we could open ourselves up to endless discovery.