I still do my old arts of Hsing Yi, Bagua, Taichi just added wing chung. To say it changed my overall approach to each of the others, how i simplify the movements in like Bagua now is different, though it has more of a Shui Jow style for its throws than Wing Chung. Hsing Yi an Wing Chung physically feel like the very same art when i do them. I do not know which had influence on which but it is very aperant they had been connected somehow. Hsing Yi stance in essence the same stances as Wing Chung, the axe effect or metal in Hsing Yi the same. There must have been alot that crossed over way back when between them.