I Was Born with Immortal Bones, but You Want Me to Work as an Undercover Agent in the Demon World?

The world has entered a post-civilization era, where technology and gods coexist. Jiang Lan accidentally traveled to the earth thousands of years later, but he unexpectedly awakened the immortal bones in his body when he was executed with hundreds of millions in gambling debts. "City Lord, you'd better execute me. It's impossible to be an undercover agent. He will be eaten alive. His death will be ugly..." "Pay back the money!!" "Actually, I think it is my responsibility to plan for the great cause of the human race. This time I will definitely live up to the trust of the city lord and break into the demon clan." Nine years later... "It was agreed upon for three years, three years and three years. Where was your nine-year compulsory education at that time? It's almost ten years, big brother. Recently, the old man from the Spirit-Eating Clan has been looking at me a little strangely. If you don't let me go back, I'm afraid that old man will hand over the top ten demon-eating Spirit Clan to me." But when Jiang Lan successfully penetrated into the demon clan and became the ultimate undercover agent, space-time streaks appeared in the vast sky... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.