C4016 Gear Method Done!

Everyone looked at Yu Chen.

"What?"

"Gear!"

Yu Chen said excitedly: "I understand! I understand! Why do we always fail!? It's the gear!"

" The gear? What gear?"

"Think about it, how can two gears combine into one?"

"Put it in, put it in! Drive each other!"

"Right! But how can we insert it? If the angle is the same, can I insert it? "

Everyone was stunned, but Chu Yan's eyes lit up