still i dont know why he needs to put on the earing!?!
I think, because Tian likes him and he want to see it on him. They aren't a couple now, but I'm sure Tian wishs it for the future :). Sorry, my English isn't good, I hope you understand what mean.
thats all? u mean like a collar on a cat?
No, that wasn't what I mean. He likes him for sure. If you give a person you like a present I'm sure you will see it too, or not? Maybe Tian is a bit too persistent, but it's a Manga and not real life. So take it easy ;)....

NEW TRANSLATED UPDATE http://yaoi-blcd.tumblr.com