Working in the Dragon Clan

Ye Ze, an orphaned street kid from a small coastal city, has inexplicable dreams, gets taken to Cassell College by inexplicable people, and inexplicably goes off to slay dragons...

The earth trembles, the World Tree is reborn, Cassell College's crest shatters, and the tragedy of reincarnation comes to an end.

The First Generation arrives.

(I can't write a proper blurb. In short, this is a Dragon Raja fanfic. The protagonist is a native of this world who grows stronger bit by bit. There are some original ideas, and the author's writing isn't great, so please bear with me. If something is really unbearable... I don't mind if you give me a scolding.)