Everyone thinks so judging from officially disclosed numbers, and cargo floor and cargo bay width seems to prove that, at least 99 and 99A2 fits.
But taking into account potential conflicts envisioned by PLA commanders, isn't it much easier to transport 'em just by sea or, save us God from this variant, by land?
yeah but full service life of this aircraft is something like 30 years who knows what's the mission will be in 30 years.
also remember on china's western periphery the land arteries (rail, roads) are very thin and almost all has choke points that can be disabled.
But, the troops stationed in Xinjiang and Tibet are never meant to defeat an invasion by itself. they are meant to react quickly and hold on to strategic arteries, while the reinforcements gets pumped into these areas via these artiers for counter attack.
let's envision if a crisis erupts in xinjiang, heavy tanks or even just light infantry from an foreign entity rolling in,... and the land artieries are temporary out of action by surprise attacks, then an air lift campaign can quickly lift heavy armour, mech inf and air assault groups from staging basis in gansu, innermongolia, sichuan shanxi etc into forward air fields. independent or main artieries. that's a capability that is very nice to have.