It's almost as if the water is roiling up from Hell itself, so the demon gets much more playful than he normally would in any body of water. Paddling around, diving under the surface, just having fun splashing all by himself while Huaisang steps away.

When Huaisang returns, the hound hauls himself out of the water so he can meet him halfway and curiously sniff the cake of soap. Heat and steam rolls off the hound's fur in the open air, and Huaisang is lucky that he doesn't shake himself off and cover the man with splatters of scalding water.