Am I an Undercover Agent? True or False

Tan Li was sent by the sect to work as an undercover agent in the Demon Sect because he just contradicted the sect's son of God when he was bullying others. But what Tan Li didn't expect was that he turned out to be the Holy Body of the Innate Demonic Dao... (Introduction is weak, please move to the main text) (New author trying to write a debut novel)