He pops out of a barrel right next to Guy. "Boo!"
Guy is on edge because of... well, everything around him. So 115 (aka Xiaolong) popping out of a barrel to spook him did no favors. The barrel spontaneously bursts into flame, though almost as soon as it does, Ruixiong was able to quickly levitate the lad out before he'd be affected by the heat or smoke.
"WATCH IT, blockhead, you nearly burned my new pal!!"
"YOU WATCH IT, I would have just stuck you inside the barrel and cooked you myself!"
"Try me, Lizhi!!" Ruixiong stamps onto the floor and widens his stance as swords, cannonballs, crates, and all sorts of nearby objects start lifting all at once around Ruixiong.
In turn, Guy burns everything alike, keeping Rui within a circle of flame. "Let's go!! Right now!!"
...And before anyone would know it, two cannons roll from their hatches to 'suck' up both men by their backsides into their barrels before rolling back then shooting them out into the water.
Giovanni pats 115 on the head. "Don't worry about them, it happens all the time. They'll be back."