What’s the name of the fat guy with the water cannon in The Divine Soldier?

Ximen Xiao

About twelve years old, the young master of Ximen City. He is taller and fatter than other children of the same age. He has a more straightforward personality. His movements are slow but not clumsy, and he lacks confidence. But he never gave up, and he was determined to rescue his father, which moved everyone. He made a lot of jokes because of his "three beats slow" reaction. His personal weapon is a water dragon cannon, and his magic weapon is Xiao Taixu. Later, he sings in the bath to induce the magic weapon and dance.