Flag, what is a flag? They use each other, use each other to achieve their own goals, they are each other's flag. Will you fall in love with the devil? Everyone said he was like a devil. He took every step of the way, but in the end he lost his heart. Between love and hate, there is a moment of obsession. The swallow flies south with endless sadness and reluctance. After all, the palace in the north cannot trap the swallows flying south.