Help me find this BL

Hello, I don't really remember too many details but I'm pretty sure the ML appears for a while as a chibi Taoist for a while? The MC had a pearl or something with divine powers inside him and a lot of creatures and such are trying to get it from him. I think there was a blob like thing that makes the characters very tired and unable to move in one chapter?

The ML goes from the chibi into a man with long silver hair I believe? And mostly during the night?

If you know which one it is please help! Thank you in advance!