https://www.mangago.zone/read-manga/soul_contract/
this maybe? I never finished it so idk
If you look at that Manhuas cover will you be able to confirm it / find it ??.... If yes then ... I will link one of my list here check it till page 5 only, cuz that's where historical comics end . I am saying this cuz while reading your summary I feel like I have read it too but since I have read many historical Manhuas , I can't pinpoint it out .... I am putting the link below.. check it if u are desperate and tell me if u found it ...(^^)
https://www.mangago.zone/home/mangalist/1771731/?filter=&page=1
none of them are it thank you for trying
okay so basically this BL is Chinese and it’s like ancient china ifyk so basically the top has white hair and he’s like a god or whatever and he’s wearing blue and white and the bottom is like white hairs evil lover back in the past and the the black hair guy wears black and red and he comes back to life but he doesn’t know and like a dragon is involved oh and the white hair guys is now black hairs guy like helper idk just help me!!!