I want to be clear, this is an unprovoked terrorist attack against Pakistan.
China should be already transporting huge volumes of ammunition, missiles, spare parts, and any other kind of war supplies that Pakistan is of need
Brother issues are between family, but when a thug wants to enter the house and beat the brother, gotta unite and shotgun him to death.
PLA stock is coming I guess
That's a nice sentiment, but may or may not be necessary.
Assuming India did not directly target any Pakistani government or military facilities as they have claimed, the Indian authorities may not in fact want to escalate despite all their chest beating.
TBF the Indian military probably has a far more realistic read on their own capabilities and limitations than the overzealous BJP nationalists in power, and may favor de-escalation.
Likewise, if the balance of aircraft attrition from last night favors Pakistan over India, it may make sense for Pakistan to declare that it "gave the big bully next door a bloody nose," and call it a day.