Friendship is a big one. Since they start as friends, many fictions explore how that friendship can be the foundation for a deeper relationship. Another common theme is loyalty. Their loyalty to each other in the original series is often expanded upon in fanfiction.
Adventure is also quite common. They go on new magical adventures together in fanfiction, which is exciting. And of course, self - discovery. They learn more about themselves and their feelings for each other as the stories progress. For example, in some fictions, they realize their romantic feelings while on a dangerous quest.
One more theme is the struggle with identity. Given their status as wizards and their roles in the wizarding world, in fanfiction they sometimes struggle with how their relationship might be perceived. This adds an interesting layer to the stories as they have to deal with both their own feelings and the potential reactions of others.
If you want the clearest chapter reference, go to Chapter 71. Early on, Shu Yan curled her lips with a hint of jealousy, "When can it be my turn...; later, the chapter leans on Who in this circle didn't know that Jiang Li had a thing for the....
If you want the clearest chapter reference, go to Chapter 47. Early on, Qi is actually second???] [Did the production team make a mistake?; later, the chapter leans on Isn't Qi supposed to be first?] [So who's first?.
Chapter 67 is the strongest chapter-level answer because it starts from I'm pissed," Jiang Yan cursed again, "These people are too much, aren't... and follows through on Accompanied by the wisps of smoke gradually rising from the stove behind....
Chapter 17 is the strongest chapter-level answer because it starts from Jiang Li glanced at Jiang Shixu, who was tense and anxious behind her, and... and follows through on I've been a mother for more than ten years but never tasted anything made....
Look to Chapter 49 for the clearest answer. It begins with My phone!!!" Jiang Yan's roar echoed continuously through the mountains in..., keeps building through Watching helplessly as his latest-model phone was taken away by a..., and lands on Thinking this, Jiang Yan marched forward, pulled Jiang.
The best chapter pointer here is Chapter 56, "Popular Host L God Actually Supports Jiang Li?!". It opens with Lei Shen originally had no idea about the trending topics on Weibo. and closes on At this moment, Lu Xingchao was still in the dark..
Chapter 77 is the strongest chapter-level answer because it starts from Wen Jiaojiao's reminder calmed Shu Yan down. and follows through on But who knew that the next second, the lottery box would be handed over to....
Look to Chapter 74 for the clearest answer. It begins with Having seen Jiang Li's ID before, he knew that this person named Shiguang..., keeps building through And he only knew the answer to that one question., and lands on The man's phoenix eyes narrowed slightly, he looked at the girl.
Look to Chapter 90 for the clearest answer. It begins with Watching He Yun gradually take control of a tractor under professional..., keeps building through Director Sun," Qi Tianyu, having finished admiring, started to complain,..., and lands on Jiang Li finally let go of Jiang Yan's arm..
The best chapter pointer here is Chapter 47, "This Result Definitely Has Insiders!". It opens with Qi is actually second???] [Did the production team make a mistake? and closes on Qi is so excellent and only got 17, yet Jiang Li comes in with 22?.