Five kinds of educational toys at home and abroad.
1. The most famous ring is the Jiu Lian Huan, which originated in the Song Dynasty. It contains extremely profound sequence principle, and it is difficult to solve if the law cannot be found. If you are facing the Nineteen Serial, it will take you more than four days to solve one step per second, but if you are facing the Forty-Nine Serial, it will take more than ten million years! Other skill games, such as Wanshou Ring, Flower Basket Ring, Maze, Plum Blossom Lane, Viper Dance, Viper wagging its tail, etc., all contain profound mathematical principles, which are helpful to cultivate and improve people's spatial imagination, logical thinking and mathematical analysis ability.
2. Belt buckles include Yuanyang buckle, Jixiang buckle, concentric knot, Qian Qian knot and M buckle. Most of these games make use of the elasticity of the rope. Among them, M bond is the most representative. You may have accidentally separated it, but after installing it, you are at a loss. It is quite difficult to master its regularity.
3. Ropes are usually taken out of the set frame, such as maze images and high notes. This kind of game is more difficult, just like every sailor has to master dozens of knots, because ropes are the most flexible and varied.
4. Puzzle games are generally difficult, such as "T-puzzle", "Flower Taro", "Tangram" and "Six puzzles", which require you to completely jump out of the trap of conventional thinking. You can't be limited to the shapes of a few puzzles. If you spend more time, it can tell you a new way of thinking.
5. There are many kinds of comprehensive games, such as Single Noble, Hanoi Golden Pagoda, Magic Box, Mystery of Ancient Deer, Redemption, etc. "Single aristocrats" originated from French court aristocrats in18th century. It is a game to challenge yourself and exercise logical reasoning ability with several images. The mystery of ancient deer originated in ancient Europe and has been popular for more than 300 years. Definitely worth a try.