What episode is the swimming with Yan Lili in Balala's Little Magic Fairy?

It was very hot, so two sisters and Xiao Lan came to the swimming pool to cool off. Xiaolan, who was all thumbs in learning swimming, was amused by the entertainment programs that followed. It happened that Lily and her mother came here and saw Qi and Xue swimming. Lily has a plan to make the water in the swimming pool fluctuate by magic. Xiaolan almost drowned, but was saved by amusement. Maggie was so angry that she used magic to push Lily head down into the swimming pool. Lily, who suffered a loss, was not convinced and offered to compete with Maggie for swimming. Maggie readily agreed. The two began to compete. In order to increase the fun of the game, they not only had heavy hands and feet, but also used magic to make the swimming pool wave again, causing a child to drown in distress. Xiao Lan jumped into the water regardless of her personal safety and saved the child. She accused the amusement club of being reckless, but she was laughed at by the amusement club and was speechless with anger. Finally, Maggie and Lily run out of energy and reach the finish line at the same time. Xiaolan learned to swim unintentionally from saving people.