Military Technology

: Calvin, please take a day off

Calvin is out. I'm taking a day off. The content is a bit difficult to write recently. I will try my best to improve the quality. The new book is in the process of dystocia, and the pressure is really great. I will try my best to give birth to it as soon as possible to meet your fathers!

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Genius remembers the address of this site in one second: . Mobile version reading website:

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