There were actually two purposes for lighting the bonfire and releasing the signal smoke.
The first, naturally, was to give those with ill intentions a chance to enter the old temple. As the signal smoke rose, many humans who had not received protection or could not afford the mountain deity's price rushed over, and they would certainly seize the opportunity to blend into the crowd and enter the old temple.
The second purpose was to have the Great Wall members who had infiltrated the mountains come together. With them here, the safety of the people could be ensured.
By then, there would also be a greater margin for error.
The middle-aged man acted swiftly, his face grim as he threw the headless corpse far away.