Why did grenades fall from the sky?

This question is by no means Li Nan's own question.

At that time, the other four people in the three-storey building, Gong Jian's instructor, poisonous snake, Manniu and Jade Rabbit, did not understand the problem.

Outside the virtual training ground, all of us are deeply concerned about the finals, and we can't imagine how many high-ranking people in Longteng Base, where the four masters of cold weapons confront each other.

It's really a fierce battle, a unique moment in history.

Li Nan, Gong Jian, Venomous Snake and Manniu have completed three rounds of transposition. They have really done their utmost, and they are...