Dang I finally catched up, I remember some years ago I read the first chapter on batoto, bookmarked it and forgot till yesterday, pretty good story so far. Im making my own fanfic on my head where I try to get the princess, she's so cute and dumb.
I should've mentioned this in the other chapter but I forgot sooooo
I think the reason lian had red eyeliner after losing his memories is because yuelao had woken up so a trace of him was on lianlian. The red eyeliner then went away when yuelao was drifting off to sleep as lianlian reclaimed his body once more.
Hopefully that made sense