Contracted by the Demon Lord of All Races, You Call Me the Savior?

Ye Tian traveled to the world of Gaowu where thousands of people invaded, and the strongest city "Tiandu" was destroyed. He became the only survivor and was called the savior by the world. But what no one knows is that Ye Tian awakened the contract system and bound the demon lord of all races who was the culprit of the destruction of 'Tiandu'! The Demon Lord gained 1,500 cards of energy and blood, and gave back 1,500 cards of energy and blood, breaking through the realm continuously! Demon Lord's training talent, feedback S+ talent, evil fire! The Demon Lord obtains the Noble Phantasm, which feeds back the Forbidden Imperial Soldier, the sword that destroys civilization! The boss who stands at the top of all races has everything. I have both! And there is more than one contract partner, isn't this invincible! … Black Dragon Clan: Ye Tian surrounded us alone, Yaoshou, no, help. The strongest man in Daxia: I haven't seen him for three days, but he has risen to several great realms. He is a human being. The Lord of Monsters and Mountains: He has ten thousand kinds of talents. Isn't it the combination of ten thousand beasts? God King of the Celestial Clan: It's outrageous. I used a forbidden weapon to kill him, but he blocked it and pulled out several forbidden weapons with his backhand and hit me in the face. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.