Going back to POIIFTFOI.
I still think XF's triple Kang Long You Hui was a BAD plot idea by JY.
You are trying to save a hostage in someone's arms, the last thing you should be doing is to lob a grenade or fire a rocket or 3 at the hostage taker!
What if DCQ had flung Ah Zi into the path of the palm force as a shield? That would be the sensible thing to do. After all, he had time to jump back and raise his own palms in defence after taking the time to fling Ah Zi away.
No matter how accurate the palm strike was (and it was described like a wall, not a point force), DCQ can still throw Ah Zi in front as a shield since he had time to react in defence. Unless the Kang Long You Hui's can be cancelled at the last moment, which seems implausible since they were already 30 feet out in front and there were 3 of them merged.