"I made the generator you mentioned, although it didn't work......"

Zhang Yuchu tried to ease the atmosphere, but Zhang Yi nodded silently.

It's not surprising that a simple generator is made, but it's also useless.

From the age of the steam engine to the age of the internal combustion engine, to the age of electricity.

Technology is not the key to restraining him, but the material is ......

Zhang Yuchu said:

"When my father heard your boy's false accusations, he always thought that I would learn badly

"Daming: Dad, I'm no longer a teacher" Chapter 12 Reform of the Deep Water District, the political officer and the administrative officer (two-in-one) are in the middle of the hand, please wait a moment,

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