1. First, we put the thread on the tray and then thread it out of the empty place.

2. Next, let's thread the thread out of the buckle below, wrap it around it, and then put it on;

3. Next, we thread the thread through the threading hole in the upper part of the sewing machine.

4. Next, we thread the thread on the knob for adjusting the thickness below, then make a circle below and thread the thread through the hole above;

5. Next, we thread the thread from bottom to top, then through the small hole with the buckle on it, and then through it;

Next, we thread the thread through the hole below step by step until it reaches the needle. Note that the thread should run from the left to the right of the needle.