Time-Traveling with the Emperors to Build an Empire in the Qin and Han Dynasties

I transmigrated to the Qin Dynasty. I thought just getting a glimpse of the First Emperor would make the trip worthwhile. Who knew that Qin Shi Huang would be on his fifth inspection tour and close to death? The world is about to descend into chaos. What should I do? Fortunately, I have an emperor group chat. I'll ask the emperors in the chat what to do in a situation like this! Liu Bang: Get as far away as you can, or you might get yourself killed. Li Shimin: Is the guy above afraid she'll take his throne? Calm: I wouldn't dare, I wouldn't dare. Liu Bang: What the hell are you afraid of? You always have to lead the charge, and the first one in is the first to die. Look at Chen Sheng and Wu Guang. Look at your name: stay calm! You just got here and you're already dead? I still want to watch the livestream! Calm: ... Wu Zetian: Calm, I support you in spirit. Ding! Qin Shi Huang has joined the group chat. Liu Bang: Finally! Zhu Yuanzhang: Liu Bang, shouldn't you be working toward becoming emperor right now? How did you get into the chat before Qin Shi Huang? Liu Bang: ...How should I know? Ying Zheng: Are you people planning a rebellion??? Calm: No, only the person above you. Li Shimin: No, only the person two places above you. Wu Zetian: No, only the person three places above you. Liu Bang: ??? Reader's note: 1. This is a farming and development story. The heroine can travel through different periods of the Qin and Han dynasties to witness history and build infrastructure. 2. A feel-good power fantasy. Don't expect any logic; just treat it as an alternate world. Theme: I'm an infrastructure fanatic. I just want to make a little money.