Because Yuanyang is a symbol of love, but when her spouse dies, she will find another lover. This is a heartbreaking woman. Although Yuanyang is a bird, it is above the water all day. This is following the water all day, so the answer is Yuanyang.
Lantern riddles, also known as playing riddles, are a unique form of Han folk cultural activities in China, and have been the characteristic activities of the Lantern Festival since ancient times.