C922 So Satisfying

"Be careful." Next to Qin Guan, the captain of the submarine 031 whispered to him.

Entering the submarine was similar to entering a tank. Going in from the top of the Cabin Cover and climbing down the ladder was very difficult for people who entered for the first time.

At the same time, Qin Guan was a big guy. To him, the height of the submarine was limited. He had to lower his head, otherwise