your continued rhetoric that china's "their" suggests one entity, but is fail beyond belief
separate pools have separate asic locations, with separate stratums, separate power stations and separate managers in separate locations.
the hashrate is not "combined".
if the chinese government were to cut off the internet to an asic farm warehouse. a pool manager can cellphone text message(or cellphone 4/5G api request) a hash with a difficulty to the asic farm..
when a solution is found the asic farm texts(or cellphone 4/5G api pushes) back a solution to the pool stratum.
yes pools have many stratums around the world.
if the chinese government were to cut electric to an asic farm warehouse. a pool manager simply turn on their generator temporarily while the employee's physically move rigs to a new physical location.. yes that farm isnt productive for hours. but the other 20+pools are happy because their 'luck' has temporarily improved, gaining income because they are solving more blocks due to less competition.
within 48 hours the electric losing farm would be back online
if the chinese government were to outlaw mining. then within 48 hours everything moves to thailand or mongolia, or other neighbouring countries (and yes pools already have property and pool stratums and guys managing pools outside china.. even if the classification you call the pools are 'chinese', they are not actually all chinese)