Depends on what he means by chinese tap. Tricks or techniques in gymnastics are often called different things by different coaches. (flick flack vs back handspring or stoop circle to handstand vs toe shoot, or toe shoot vs toe catch, etc...) I am going to just assume that chinese tap means a front giant performed in the way all of the olympians do it, (aka, accelerated front giant, whip front giant, late tap front giant, Nastia giants, and Jaeger tap) see what i mean...
Anyways, if that is the case then the reason he wants to change the tap is because it opens up the door to several tricks, which are performed out of the "chinese tap". (i call them whip or accelerated), You will see that the pike (or hollow) shape is held through the bottom and the heel drive is later than a conventional front giant which opens up through the bottom and usually pikes over the top.
Chinese giants do take more time to learn, when compared to conventional front giants but well worth it. The national team coaches recommend they be taught this way and actually require you to teach them this way during the u400 test. You can see the late tap on the front giant here. .026 seconds in. (I know, I know, but I can't help pedaling this video, it's just too cute)