Strange wrote:according to wang's daughter, wxz only taught jianwu to han xingqiao... i think the vid clearly shows why
Maybe the only one to whom Wang taught jianwu as he was himself taught by certain
Huang Muqiao (
edited, correcting name), which was based on sixiang - four manifestations. This was some kind of external addition to yiquan. While others practiced jianwu rather as something emerging naturally from yiquan practice. They could see Wang performing jianwu, but he didn't teach them 4 manifestations forms, insisting, that they should develop their jianwu by themselves. Later Wang wrote that he wanted to test their abilities, check who of them will be able to achieve that by themselves, without teaching them those specific forms.
Additionally, it's possible that Han Xingqiao's jianwu became also influenced by liuhebafa, which he learned from Wu Yihui.