Martial Peak - Ch. 3165 - Luring The Tiger Away From The Mountain

[MangaDex]

 

[Kaarme]

I'd assume the point was that Yang Kai gave the old ancestor the red hair ornament, when she was in her child form, and she became so fond of it that she still wears it in her adult form. It's a pity the manhua artist drew the kid form already with the ornament when she first met Yang Kai, so it's kind of pointless for Yang Kai to give her what she already had. Yet he gave it to her nonetheless, so she should have two of them, but she only has one. I guess at their cultivation levels such minor mysteries aren't worth mentioning.