There are concerns that China is attempting to change the status quo by force, rather than by rule of law. But if China opts to take that path, then it won’t be able to emerge peacefully, . . . so it shouldn’t take that path, and many nations expect Japan to strongly express that view. And they hope that as a result, China will take responsible action in the international community.
Japanese PM Shinzo Abe
“If Japan does resort to enforcement measures like shooting down aircraft (Chinese drones), that is a serious provocation to us, an act of war.”
PRC Defense Ministry