Randomly stumbled on this video of an American player who visited China and had a few coaching sessions. He learnt a footwork technique described by his coach as the Li Mao (the coach) step. Not a big deal, it's just a small jump to include during footwork when coming from the rearcourt to the frontcourt that helps reduce the number of steps from 4 to 3, thus it is supposed to help reach the shuttle faster and earlier. I think we all do it from times to times without really being aware - or at least I wasn't - but I didn't realize its efficiency until I try it for 30 mins this afternoon doing some shadow exercises. It works very well and is worth highlighting for those who did not really know about it and want to implement it regularly and consciously in their games.