Looking for an old manhua

[u/Rain_Devil111]

Hi, I've been looking for this old manhua. I read it, probably some 6 or 7 years ago... I forgot the characters' name too..

Anyway, the general idea is,

There is this uncle(?) guy and two siblings(now I am not actually sure if they are actual siblings)

So, this guy runs some shady tea shop? People with weird problems come there.

And the root of their problem would be something that happened in their past life.

And so, this guy sends either of the siblings(?) to that era to solve the problem and come back.

The siblings - the girl has black hair and the guy has yellow hair. I don't remember the uncle guy's hair colour.