Switch freely between Yin and Yang stances, as embodied by the Moon and the Sun.
With Shining Sun, when you break a target's block with Flying Goose Greets the Sun, you debuff your target with Scorching Day. When you hit a target who is not blocking with Moon Shadow Sways, you receive the Moon Shadow effect.
With Dark Moon, when you break a target's block with Flying Goose Greets the Sun, you debuff your target with Flying Feather. When you hit a target who is not blocking with Moon Shadow Sways, you receive the Swaying Shadoweffect. When this happens, two skills switch from Yang to Yin. Sun Infuriates the Sky becomes Peerless Moon, while Black Blade Venerates the Sun becomes Move Cloud and See the Moon.