1. Lift the first ring from the rod and lower it from the middle.

2. Take the third ring according to the first ring method.

3. After installing the first ring, remove the first and second rings.

4. Remove the fifth ring according to the method of the third ring.

5. To remove the fourth ring, the third ring must be on the rod, and the first two rings must be installed.

6. Install the fourth ring.

7. Starting from the front, remove the first four rings.

8, and so on.

I think the Nine Rings is a folk toy in China. It consists of nine rings made of metal wires, and then the rings are sleeved on various frames. When we play, we can untie the nine rings by repeated operations. This toy belongs to educational toys.