Thanks for commenting and dropping the link! :) I'll have to check if there's some good ones there. Yeah it seems the OTP has now formed which isn't a bad thing. :)

There's been a couple of fanfics with the Changge and Mimi pairing that I had the fortune to read that have been a pretty good read as well which I'll leave below:

Romance in the Plains (2766 words) by sook
Chapters: 1/1
Fandom: 長歌行 - 夏達 | Cháng Gē Xíng - Xià Tá
Rating: Mature
Warnings: Creator Chose Not To Use Archive Warnings
Additional Tags: Romance, Historical, Fiction, Fluff and Smut
Series: Part 1 of Chang Ge and Mimi.
Summary:

Chang Ge and Mimi work together to cement their image as a couple.

Wolf-hunt (3750 words) by Umbralpilot
Chapters: 1/1
Fandom: 長歌行 - 夏達 | Cháng Gē Xíng - Xià Tá
Rating: Teen And Up Audiences
Warnings: No Archive Warnings Apply
Characters: Li Chang Ge (長歌行 - 夏達 | Cháng Gē Xíng - Xià Tá), Mimi (長歌行 - 夏達 | Cháng Gē Xíng - Xià Tá)
Additional Tags: Gender Roles, Female Friendship, Pre-Slash
Summary:

One morning, when winter has barely ended, Chang Ge tells Mimi, "we are going hunting."

Women don't hunt, Mimi knows.