I Have Tens of Thousands of Vehicles in Late Ming: Zhang Xianzhong, Get Lost

A modern man transmigrates to 1644 and becomes Zhu Zhishu, Prince of Shu in the late Ming dynasty. From the start, death is counting down: less than two months remain before Zhang Xianzhong historically captures Chengdu! Zhu Zhishu's vision goes black. He wishes he could return to the modern world immediately! Luckily, heaven leaves no one without a way out! He discovers that his go-to shopping app, a certain online marketplace, has transmigrated along with him. As it happens, his family is the richest in all Sichuan, so money is the last thing they lack. That means that even if he can't defeat Zhang Xianzhong, he can protect himself and evacuate Chengdu safely! So... a little over a month later. Zhang Xianzhong breaks through the city gates a day ahead of schedule, only to find 120,000 modern modified vehicles charging straight at him, bristling with lightning-charged spikes. What good are 600,000 troops? They can go ask my steel meat-grinder convoy! Zhu Zhishu laughs uproariously, drunk on his own success. What a glorious day to roll over everyone in my path! [This novel and its characters are entirely fictional. Any resemblance to real people or events is coincidental. Please do not imitate.]