If the safety switch box is broken, the property maintenance personnel will replace the zero line and the live line. Although it is good, will there be any security risks?

Even the new c40 will trip! There must be a leak! Although the zero-fire line exchange solves the immediate problem, it is still very dangerous. You should ask an electrician to start the test from your switch box to the first box, and then go to the second box to check where there is grounding. Just find a new one! By the way, I am an electrician!