Mighty Heavenly Dragon: Suppressing Ten Thousand Demons at Lanruo Temple

Transmigrating to Lanruo Temple from the start, Faxuan is freaking out! Who doesn't know that the black mountain behind the temple will eventually become the Old Demon of Black Mountain? Who doesn't know that the giant locust tree growing on the back hill will become Granny Tree Demon? Staying at Lanruo Temple would be a death sentence, wouldn't it? Luckily, he awakens a System and heads down the mountain to slay demons from the start, earning the Great Might Heavenly Dragon Spell as a reward! Granny Tree Demon? I knew you weren't human. Take this, Great Might Heavenly Dragon! Old Demon of Black Mountain? Great Might Heavenly Dragon, World-Honored One, Ksitigarbha! The female ghost Xiaoqian? Take this...