四期必开三期中简介：Just when Chen Xiaolong and others took out grenades and were about to throw them into the house, suddenly, the door in front of them was suddenly opened from the inside, and several grenades were thrown out in an instant.
Just when Chen Xiaolong and others took out grenades and were about to throw them into the house, suddenly, the door in front of them was suddenly opened from the inside, and several grenades were thrown out in an instant.
