1. Bend the binding rope into an "N" shape, don't pull it too tightly, loosen it a little, hold the left side with your left hand and the upper right inclined plane with your right hand, leaving some allowance;
2. Grab two ropes with your right hand and put them on the upper left. At this point, your left hand should grasp the bottom corner of the rope, rely on the rope outside the bottom corner, and make 1-2 turns from bottom to top along the margin left by the upper right oblique angle of your right hand, so that your right thumb is compact;
3. Let go of the upper right hypotenuse of "N" with the right hand, instead of completely letting go, but stroke down vertically along the right side of "N" and let go with the left hand. The lower left corner of the just circled "N" should be kept in good shape, and the left index finger should hook the right vertical stroke of "N" and draw from bottom to top;
4. Hook the ring of two ropes with the index finger of the left hand, and hold the extended part of the rope with the right hand. When both hands exert tension at the same time, the knot begins to become long and flat, and all parts are evenly stressed without ugly and unreasonable winding;
5. Finally, adjust the length of the rope with the left hand, hang the rope loop on the required node, and pull the extension of the rope in the opposite direction with the right hand until it is completely tight.