The sea in this situation suddenly lost the barrier of the air wall one day, and connected to a place full of darkness. There were no creatures of light, no dark dragons, only a group of nearly broken knife spirits full of dark atmosphere.
Only one child of light named Yun Du could see the main pill. He asked the ancestors and elders, but they did not tell Yun Du. Perhaps, even the elders did not know the reason. So, after bidding farewell to the elders, Yun Du entered the main pill.
Concept: A single spark can start a prairie fire
