One is a forced, fictional setting, the other a Qin Dynasty without the Han.
A familiar story about a protagonist traveling back to the Warring States period to change the past. Its message is: Borrow me thirty years, and I'll give you a glorious realm stretching ten thousand miles. It's a lighthearted tale, with an ending that's perhaps a happy ending within a bad ending?
There are no pairings in the whole novel, so feel free to enjoy the romantic tension: the Qin-Han group is Zheng-Fei, not Wei-Nie; the Quicksand group is Fei-Liang, not Wei-Lian; and there's the classic Zheng-Si rather than Mo-Feng-Yu, along with other love triangles.
The protagonist has no pairing! No pairing! There isn't even a crush. Rationality keeps a firm grip on emotion throughout. There may be differences in allegiance, but there will absolutely be no romantic conflicts. The author is a science student, writing mainly for herself. I have no writing skill, and the story is excessively rational, so it may be an uncomfortable read. Please think carefully before starting.
This is primarily a history novel. From the Spring and Autumn period to the end of the Qin Dynasty, the protagonist probably likes everyone whose name is worth knowing. So, throughout the story, the enemy is fate (and probably also the feudal dregs of the Han Dynasty's Three Cardinal Guides and Five Constant Virtues, and beyond). The historical material is mainly drawn from the Records of the Grand Historian, with many direct quotations. I'm really not padding the word count.
The setting is fictional fantasy, and the future history will lead to is still undecided. Therefore, there is no Han Dynasty, and the story spans more than half a century.
I don't quite agree with the historical Liu Bang, but I acknowledge his achievements and standing. His fans should read with caution.
The protagonist changes sex, but only because of a forced sex change caused by a change in species. Anyway, there is no romance-brained behavior, so it's not much of an issue, but I'm flagging it as a potential trigger.
I started writing this in 2018. The second season hadn't come out when I was writing, and it won't be covered in the story.
Also, the second-season trailer for "Tian Jiu" came out today, so I'm posting the first chapter to celebrate.
Finally, I dedicate this work to the Hundred Schools of Thought and the Spring and Autumn and Warring States periods.