2. Start the front knitting needle and the back knitting needle to the armpit.
3. Start minute division: chest part 18 stitches, 9 stitches for each stitch, and back part 18 stitches.
4. Knit the back, front and back needles first. Knit it on the collar, leave 4 stitches on the left and right shoulders, and thread the middle coil for later use.
5. Start knitting the front piece, the front knitting needle, the back knitting needle and the front knitting needle twice. Leave 4 stitches on the left and right, and sew 4 stitches on the back after knitting.
6. Pick one needle from the front and back collar, and knit the upper and lower needles to weave the hem. Weave to the required width and close the needle.
7. Pick up the sleeves, pick a needle from each braid, start knitting the next needle, and collect the needles under the sleeves at an appropriate distance.
8. Weave the edge of the sleeve and arrange the other sleeve in the same way.