He Tian about to add a third piercing

Where can I see that?

http://www.mangago.zone/read-manga/19_days/bt/mpn_chapter-1871557/pg-1/

This chapter for example. Official illustrations show it too if you just scroll further back. But I was lazy and didn't want to search for the chapters hehe.

Wait, he is wearing black studs there...!

I really need to put more attention to those little but significant details

I noticed it too and I have a feeling that the third silver earring is like a "ring" representation. Fck my imagination is hyping me up.