Male, also known as Prince Xian. He is not of Yuan blood but was adopted by Second Uncle after the real Yuan Yunyue died prematurely at twenty days old. He shares a childhood promise with the Princess, who called him San Dan. He was found by the fish pond with soaked robes, and is annoyed by his eunuch's nagging. He keeps the secret of his adoption known only to himself, Second Uncle, and the Princess.
