Both based on Bl Novel
Immortality has a deeper story
Both have good chemistry
Both are Amazing Stories

It's Really good so far I believe it more about Lan Zhans Feelings for Wei Ying it's for International viewers....It's pretty good so far
https://m.wetv.vip/play?cid=znvxrcx4ooav6tz
There's a link for Ep.1 with subs