What episode is Sophia and Hugo dancing ice?

Season 1 episode 7.

According to Douban's inquiry, in the first season of the cartoon "Little Princess Sophia", there was a lack of partners when attending the royal ball. Hugo taught Sophia ice dancing, and finally they went to the dance together. In order to learn how to be a qualified princess, Sophia came to the Royal School. Here, she met many other princesses and forged a deep friendship with each other. In the process of learning, Sophia encountered many difficulties, did not fear difficulties, went forward bravely, and won everyone's love with integrity and sincerity.