Transmigrating as the Demon Lord: I Devour the Eight Gods from the Start

From the start, he transmigrates into the world of Jackie Chan Adventures, becoming the Fire Demon, Shendu, one of the Eight Ancient Demons! Just as Li Yan is racking his brains to collect the talismans, the System belonging to transmigrators arrives. With a mercenary System at his disposal, Li Yan decisively becomes a mercenary for all the worlds. He collects Shendu's talismans while taking on mercenary work. As Li Yan grows stronger, the demons in Hell are left dumbfounded. The Seven Demons: You can't possibly be Shendu. Shendu isn't this powerful! Seeing the Seven Demons' astonishment, Li Yan smiles. Li Yan: The Seven Demons? From now on, there's only one demon in the whole world! The Fire Demon! The Demon Shendu? Li Yan says, Sorry, in the world of Jackie Chan Adventures you can call me the Demon Shendu. But what should you call me outside that world? Call me His Majesty, the Dragon Emperor!