1. First, select the appropriate number of stitches and threads, and determine the number of stitches and rows to be knitted according to the pattern.
2. According to the instructions in the pattern, carry out basic knitting, such as flat knitting, needle lifting and needle shrinking.
3. Put the unnecessary needle at the position where the hollow part is needed on the auxiliary needle for subsequent compilation.
4. At the beginning of the hollowed-out part, add another wire. Put the needle on the auxiliary needle back on the main needle and knit with the thread added.
5. When the part indicated in the pattern that needs to be hollowed out is completed, the unnecessary needle is put back on the auxiliary needle again, and the added thread is cut off.
6. Continue the basic knitting according to the instructions in the pattern until the whole pattern is completed.
It should be noted that the length and tension of the thread should be well controlled when adding thread to the hollow part, so as not to affect the overall knitting effect. In addition, you should also consider your actual skill level and time limit when choosing the mode.