What is the origin of figure skating synchronized free skating?

Figure skating originated in Britain in18th century. The first Austrian Figure Skating Competition was held in 1872, the International Skating Federation was established in 1892, the first World Men's Single Figure Skating Championship was held in Petersburg, Russia in 1896, and it was held in Davos, Switzerland in 1906. Figure skating rink is 56-6 1 m long, 26-30m wide and 3-5cm thick. Men's and women's single skating was listed as the first Winter Olympics in 1924, while pairs skating and ice dancing were also listed as Winter Olympics events in 1924 and 1976 respectively. Each country and region is limited to 3 people (right). Figure skating requires athletes to have strength, endurance, speed, coordination, flexibility, balance, grace and stability. Personal basic skills include: all kinds of balanced jumping, rotation, jumping, all kinds of sliding footwork and all kinds of coherent movements. Some special movements of pair skating include: spiral, lift, swallow rotation and so on. Figure skating is divided into single skating: men's single skating and women's single skating The competition is conducted in the order of short program and free skating. Short program refers to a set of procedures that athletes must complete eight movements and connection steps such as jumping, rotating, joint jumping and joint rotating within a specified time of 2 minutes and 40 seconds. The referee first evaluates the action score according to the quality and difficulty of the athletes' actions, and then evaluates the performance score according to the balance of content arrangement, the consistency of music, speed, posture and the performance of musical characteristics. Every perfect score is 6, and the sum of the two scores is the athlete's score. Free skating is performed by the athletes' own choice of music. The man completes a set of balanced sliding movements consisting of jumping, rotating, footwork and various postures in the specified 4 minutes and 30 seconds. The referee evaluates the technical level and performance score according to the difficulty, quantity and quality of the athletes' movements, the coordination of music, posture, expression, originality and venue utilization. Double skating: a man and a woman pair up to participate in the competition. The competition is conducted in the order of short program for two people and free skating for two people. Athletes choose their own music for the double short program and complete a set of prescribed actions for the double short program within the prescribed time of 2 minutes and 40 seconds. Only one action is allowed, and extra actions will be deducted. The referee will evaluate the specified action points and performance points according to the athletes' quality, completion, content arrangement and music coordination. The freestyle skaters choose their own music and complete a set of self-created movements within the specified 4 minutes and 30 seconds. The referee evaluates the technical level and performance score according to the athletes' difficulty, quality, action arrangement, music coordination, posture, expression, originality and venue utilization. Ice dancing: Originated from figure skating, it started in Britain in 1930s, but it mainly focuses on dance steps, emphasizing the expression of music with movements. A man and a woman are paired to participate in the competition, and the competition is conducted in the order of dance, choreography and free dance. Prescribed Dance: The International Skating Federation adopts the lottery method to determine two sets of 22 sets of prescribed dances as next year's competition events, and complete the movements according to the prescribed music, pattern, footwork and repetition times. The referee evaluates the technical score and performance score according to the athlete's quality and posture. Choreography is also called stereotype dance. Athletes choose their own music according to the prescribed rhythm and complete a set of self-made dance steps and patterns within the prescribed time. The referee evaluates the arrangement score and performance score according to the actions completed by the athletes. The free dance is performed by the athletes' own choice of music, and the self-made dance composed of various footwork, lift, small jump, posture, grip and so on is completed within the specified 4 minutes. The referee evaluates the technical score and artistic impression score according to the quality, style and innovation of the athletes' movements.