Doesn’t really make sense to. If they justify civilian vs civilian retaliation they will end up losing much quicker because it green lights indiscriminate attack on urban centers.
They will loose no matter what. The goal, as directed by the Americans, was never about winning, but about causing maximum damage to China.
Viewed from that lense, triggering PLA reprisal attacks against civilian targets is precisely what the Americans want, to further aggregate grievances and ferment popular resentment, unrest and ultimately armed resistance to Beijing’s rule when they inevitably loose.
This is also why the PLA will do what it has always done, to show extraordinary restraint and discipline, and go to extreme lengths of avoid civilian casualties and collateral damage where possible.
This will be greatly facilitated by China’s growing technological dominance in drone warfare and AI. So, if the ROCA hides missiles in cities, rather than go Gaza Blitz like the Americans or Israelis, what the PLA is far more likely to do is deploy drones to deal with them precisely. Think MALE UCAVs parked 24/7 over suspected HIMARs hiding spots waiting for a clean shot; and/or swarms of AI micro drones being dropped to go into underground structures to automatically hunt for the launchers. They can daisy chain to provide two way data connection if needed to provide both kill confirmation as well as allow man-in-the-loop override in case they go after something civilian by mistake.