the MC and ML have reincarnated multiple times and they've always fallen in love with each other. In his previous life the ML was born as a deviant called the "lone Star" and they generally have low to non-existent EQ and apparently the effects of one lifetime as a lonestar appears in the next 3 lifetimes. The current ML has low EQ but the dude evolves. Once when the MC temporarily had amnesia he misunderstood something and the ML noticed it almost immediately and took action to prevent the misunderstanding. If it was him in the beginning of the story then he would've ignored the MC so yes growth occurs in both of them

If I have just one regret, it's that in they current life (that of the story) they didn't find happiness at the end. Yes, they were happy but did not reunite for that long. They endured so much, and it was so long, they were so strong and still didn't have the happyness they truly deserved. I know they are reborn but still... it's not exacly the same character and I just want to hurl and cry with ferocity because no, they deserved much more, as well as their friends. They deserved to be great soldiers, to be happy together and this is just so f*cking unfair !!

Also there are time in the story where the plot was still a little too much complex or at the contrary a little absurd (why Zhu Yue hate so much Ying Feng just because he didn't chose him as a lovers and even try multiple times to kill his most precious loved one who did nothing to him ??) but this is nothing compared to my frustation... Hope they remember (or will) remember their last life.

Have you ever heard of a Gu insect? They have them a lot in Cultivation and Jianghu (martial arts) novels. They are basically bugs/snakes/big-bad-killing-machine creatures that someone with ill intentions puts into a small space and forces them to fight together until only the strongest creature is left alive at the end. And they do it over and over until supposedly an apex killing creature is refined to perfection in the end. This is what the bonding ritual is, and yes, it's supposed to be messed up. If you are wondering why this system exists, keep reading, it's part of the story.

CP: Second male lead ZY x Online shop owner CH

CH is so clever and free to accept the reality that he makes use of it to his advantage well, but as Fate is a cruel manipulator, so he met, bonds and tangles with ZY until his last breath and establish a sad ending for both of them. As for ZY, that fellow had quite serious psychological problems with inferior traits compared to his classmates. For a bullying sufferer like him, there is hardly a way out, only two paths are awaited, either find the opening, let the time slowly self-cure the emotional scars or forever fall into the abyss. And the fact is, he chooses the latter, terribly hurting CH, and also gradually breaking himself. Maybe, if their society is not the rigorous kind it is, he and his mate might have other options besides the critical choices they committed throughout the story.

The loyal subordinate XL x the weak prince YY

Their relationship has been promised for more than 4000 years, not inadequate to the main cp, and XL's loyal to YY is undeniable. I think that he is so desirable as a good follower. This couple also had a BE, though. They are, forever, missing each other's hands in space and time. After watching with his two eyes how his beloved Highness was gone, XL disappeared into the flow of time, becoming the dust in the reincarnation river, and would surely become an evildoer in Tian Xiu's history.

no matter if they were the Qi Zis in the palace where love is a deadly thing or the nestlings in Bikong school which students freely choose their mate

since the primitive time when the first QiZis developed till this time as Tian Xiu people continuously prospered

In fact, their story could be said to have a SE like other couples, but the author gives them a promising afterlife in the end, which smoothies the reader's hearts and give me a smile after all the depressing situations