C120 The reason for his arrival was stated fourth explosion

The sound of footsteps instantly reached the door. Immediately, a series of intense knocks sounded out from outside.

At this time, Zhou Shan also came to the door. Hearing a knock on the door, Zhou Shan asked: "Who is it?"

"That's me. Please open the door, Miss Zhou!"

A middle-aged man's voice came from outside the door. It was urgent and low, sounding like an order.

"It's so late