Hsing Training

I'm just starting training in Hsing I Chuan. Is it ok to do some type of tai chi practice meaning doing the classical Tai chi yang form while I'm doing Hsing I Chuan? Would this defeat the purpose of my Hsing I Chuan training(meaning hsing i chuan trains yang chi while tai chi chuan is yin chi). If I did tai chi chuan classical yang form after doing my five elements would this defeat the purpose of my hsing I chuan training because there would be two different types of chi being developed and therefore one would off set the other's chi and it would be like you never trained in either one of them because you are training two different types of chi here and so therefore they would off set each other? Yes or No?