It is said that hundreds of years ago, a warrior rescued a woman in the lake. In order to repay the favor of saving her life, the woman taught the warrior a lot of knowledge about machine arts, military skills, and governance. With the help of the woman, the warrior finally unified the countries and became the first emperor to unify the country. But since Emperor Ming ascended the throne, the woman has disappeared. It is said that someone saw the woman jumping into the lake, and the colorful lake instantly returned to a one-color lake, and then dried up overnight. Later, because Emperor Ming missed the woman, he named the lake Caiyue Lake himself. The woman also became a goddess in people's mouth because she helped Emperor Ming to unify the country.