1. splayed knot:
Tie the end of one rope in a figure of eight, and then the second rope rotates side by side along the first rope, but in the opposite direction.
2. Knot:
It consists of two simple knots with each other's lines as the axis, which can be pulled apart and combined to adjust the rope and make it expand and contract.
3. Flat knot:
Place the front ends of the two ropes side by side, then wrap the right rope around the left rope, then wrap the two ropes around each other and tie a knot at a proper position.
4. Diamond knot:
The diamond knot can complete the whole operation with one rope. One end of the rope is tied in a circle at the other end, and the end that is not tied in a circle is tied in a knot. Pulling the rope closer is a diamond knot.
Personally, I suggest weaving it to a sufficient length, weaving the two ropes on the side into a double, stuffing the two ropes in the middle to make a knot, cutting off the two extra threads in the middle, weaving a new Niukou knot, cutting off the remaining threads and burning them with a lighter or match, which can make the knot of the rope stronger.