2, and then return, as shown in the figure below:
3. Press the two wires upward, as shown in the figure below:
4. Pass through the middle circle below those two lines, as shown in the figure below:
5, about 4 or 5 times, the effect is shown in the figure below:
6. Tighten the thread, and then cut off the redundant thread head, leaving 1mm is enough, as shown in the following figure: