The Nine Dragon Wall.

The Huan Long family has lived with and fought alongside dragons since ancient times. In Dong Wenguang’s generation, they suddenly turn against the dragons and seal all the nine dragon kings in the Nine Dragon Wall. In order to gain his father's recognition, Dong Yiming ignores Dong Wenguang's obstruction and secretly investigates the whereabouts of the dragon pearls. However, he discovers that everyone is just a pawn in the game plotted by a hidden mastermind, and the truth behind it is still not the ultimate truth.