Explain how to connect secondary lines and main lines.

1. Pass one end of the main line through the eight-character ring and make 2 ~ 3 imaginary turns on the eight-character ring (the main line will pass through the imaginary circles on these eight-character rings in the subsequent operation).

2. The main line that has passed through the eight-character ring bypasses the main line that has not passed through the eight-character ring for 2-3 times, and then passes through the imaginary circle formed by the main line and the eight-character ring.

3. Hold the main line through the imaginary circle with one hand, and gently pull the other end with the other hand to slowly tighten the main line. Be careful not to hurt the main thread when tightening.

Second, the line binding method:

1. Adjust the distance between the two hooks first, then fold the sub-line in half and pass through the eight-character ring.

2. Winding the sub-wire passing through the figure-eight ring on the sub-wire not passing through the figure-eight ring and passing through the figure-eight ring.

3. Thread the double hook out of the folding ring of the secondary line, and gently pull the double hook to fix the secondary line on the splayed ring.