War of Resistance: Start with a Base Vehicle

I have been so excited by all kinds of bloody facts and fantasy novels that I have always dreamed of going back to the past, picking up a gun or a pen, and guiding the country to fight the Japanese. Unexpectedly, today has finally arrived in this great era of China. Starting with a base vehicle, how should it be developed? Waiting online, it's very urgent! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.