Who is Princess Ice's sister?

Princess Ice has only one brother, the prince of water, and clear water. Princess Ice lives in the Ice Crystal Palace and is the guardian goddess and master of ice and snow. I know most fairies, but I have no friends because of indifference. Proud by nature, but kind-hearted, will not hurt others. Only the prince of glaciers and water will show different emotions.

Role introduction:

Princess Ice is the owner of the Ice Crystal Palace and the patron saint of ice and snow. Crystal Palace is also one of the holy places in Ye Wonderland. Listen to my brother's warning not to take part in the fairy war. But in the end, because the destruction of the natural environment by human beings became more and more serious and began to disappear, I had to go into the human world and step into this dispute, but I still hesitated. I made a seven-day contract with Ye. Seven days later, I came to purify the world with Prince Shui, Pang Zun and Du Xifei.