How Could My Power Be a Book?

This is a world where supernatural powers are paramount. Others' powers are to drive thunder and lightning, to set fire to the sky, to summon divine beasts... As for Song Xu, his power is a magic book with some yellowing pages. Can you summon contract creatures? My nine-ring magic key to the kingdom of death can open the door to the kingdom of death and command countless undead armies. Can you control fire? My forbidden magic, Sunfall, can burn a whole world. It wasn't until Song Xu reached his peak that when people asked him how he could control so many powers, he shyly told the truth: "Actually, I'm not a superpower, I'm an ordinary magician." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.