C90 Regroup and Prepare for War(5)

Having said that, Ding Chengfeng deliberately stopped in his tracks. He then picked up the teacup in front of him and started drinking the water.

Cao Yafan had been waiting for him to continue explaining the performance parameters of the machine gun, but Ding successfully kept quiet.

Cao Yafan was so anxious that he scratched his head. Just as he was about to open his mouth to ask