What are 1A, 2A, 3A, 4A, 5A of yo-yo?

Yo-yo can be divided into six ways: A, 2A, 3A, 4A, 5A and AP. 1)A is also called "1A" and "SingleA", and the technical term means "SinglehandstringPlay". Because of the definition of "StringPlay", there must be a rubbing and winding action between the axis of the yo-yo and the rope, so the two basic actions of "walking the dog" and "shaking the baby/cradle" are not included in the category of StringPlay. According to the rules of the 4th UnitedTeamYo-YoJapan(UTYJ), the basic 30 strokes are not scored, so the basic 30 strokes are far from SingleA's category. 2)AA, also known as "2A" and "DoubleA", technically refers to "DoubleHandLoopingPlay", which basically refers to the way that each hand controls a leisurely hand to make it "circulate". Traditional AA includes two-handed circulation, two-handed punching bag and so on. But now AA has made greater progress. For example, the "rope hanging technique" developed by Fujii Kai, the champion of the East Japan Youyou Competition (Japanese characters are used as "rope hanging system") can also be regarded as an alternative play of AA. 3)AAA, also known as "3A" and "TripleA", is a new game composed of "A" and "AA", which means "two-handed online game". Because of its changeable fancy and superb difficulty, it has attracted players from all over the world to join in the development. 4) 4) The full name of AAAA is Offstring, which is also called "OS" and "offline technology". When playing, wind the rope around the bearing first, and then pull the rope off the shaft at the moment of throwing it up, and the bearing will rotate by itself. At this time, the ball in the air will be caught. 5) The full name of 5)AAAAA is "CW", so it is difficult to play without hands. When you play, first tie a heavy object on the ring (Duncan, the unarmed series will be bought with dice), and then you can make a fancy by balancing the ball and the heavy object without winding your fingers. AP, full name of ArtisiticPerformance, is a performance competition with yo-yo as the media. It doesn't care about the difficulty of fancy, but only pays attention to performance. Hope to adopt