C393 The Problem with Planes

Qin Guan wasn't trying to make a pie out of a cake. Right now, he had to work hard to realize this plan step by step. Now, because of Qin Guan, Coconut Jujube Country was about to come to Han Country for an inspection. Of course, he couldn't let them down!

"At the same time, tell the two of us that the exit for the tanks in Coconut Jujube Country needs to be improved. Specifically