5-1: Lie flat on the ground, open your legs sideways, and press your knees down with your hands.

11-15: press the left and right legs respectively, and press the lower fork.

15-2: Split your legs sideways as far as possible and press them down with your hands.

Supplement:

ballet, a European classical dance, is transliterated from Italian ballet. Ballet was born in the Italian Renaissance, and it became popular in France in the second half of the 17th century and gradually became professional, and it became popular all over the world through constant innovation. One of the most important characteristics of ballet is that the actress points to the ground on tiptoe when performing, so it is also called tiptoe dance. His representative works include Swan Lake, Fairy and Nutcracker.

Ballet uses music and dance techniques to perform dramatic plots. Ballet art was conceived in Italy, was born in the French court of Louis XIV in the late 17th century, became more and more perfect in France in the 18th century, and entered the most prosperous era in Russia in the late 19th century. Ballet has had a great influence and spread widely in the long-lasting historical growth process of nearly 4 years, and has become an art form that all countries in the world are fully growing up. Actresses often dance with their toes pointed.