Lu Yu is really not fooling Qi Chengshuo, but according to the truth.

But anyone who knows a little bit understands this truth, laboratory and mass production are two different things, the more complex the product, the more difficult the road from laboratory to mass production.

Qi Chengshuo obviously understood this truth, but he was too eager before, so he ignored it.

took two steps back and forth, frowning and thinking about it repeatedly, in Qi Chengshuo's opinion, this kind of sharp weapon, of course, is produced as soon as possible

Chapter 389 of "Pan Technology is Really Difficult" They took the initiative to join It is in the middle of the hand, please wait a while,

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