Assuming the intention is not to go loud and instead keep pushing, there are still tricks that one can do to get the advantage.
I recall back in the days of Sino-Soviet border conflict initially PLA kept losing to Soviet border troops in hand to hand combat because well, Russians are really tall and fit, particularly compared to PLA troops of 1969. To turn the situation around the government seeked out martial arts experts and organized them into adhoc PLA units. From then on the Soviet keep losing in scuffles until they lost patience and went loud.
If the intention is to keep the border conflict at a sustained low intensity level such tactics could be employed again. Not that I don't have confidence in hand to hand combat skill of PLA, but if we're going to fight like its 202AD you gotta polish up your reading of Romance of Three Kingdoms again and employ some stratagems from antiquity.