Each successful parry buffs yourself with a stack of Wood Painting, up to 8 stacks, lasting 15 seconds. Effect: When you get Swans Fly Over Sea, your HP recovers continuously. Each HP recovery removes one stack of Wood Painting.
When you use the skill again with 8 stacks of Wood Painting, it will remove all the stacks of Wood Painting to remove most of your debuffs and recover your Congestion. (Recovery value depends on internal skill damage.)