Anti-Japanese War 1937: Show Your Sword, Commander

[Anti-Japanese War + System + Not Brainless + No Heroine + Passionate Serving the Country + Darkness] "Ding - July 7, 1937 is detected. The commander needs to establish his power and change history when the mountains and rivers are broken." When Lin Huaichuan, an unemployed young man, opened his eyes when a truck hit him, what he saw in front of him was not a mobile phone screen, but the sky full of yellow sand in the North China Plain. "You've been through speed bumps," "Tell it to my insurance," "We're all trying our best to live." Lin Huaichuan didn't expect that a bad internet joke would come true, and the start the system gave him could be called hell mode. "Every date on the 1937 calendar was blood red. But this time, when the system interface lights up with 'Buildable Tiger Tank', all invaders will hear the same voice - look in my eyes! " (This is my first time writing a novel, so I don't know how to write an introduction at all, so I'll just stick with it)