There are numerous types of forms and styles of Tai Chi and this is a standardized one. That is a cobbling of older complex forms to create an essentials kit for Tai Chi beginners.
This Yang style form can be seen in all the parks around Asia. It varies interestingly enough in different places."The more you try to fix something the further it wanders"
Wikipedia has an entry on it.
I learned this form as a result of practice in the parks of Macau, Hong Kong Beijing, Taipei, Hong Kong Singapore and more.