First, the front piece: start with 12 stitches (the number of stitches on the shoulder) with a 6mm stick needle, and knit 2 pieces according to 6- 1- 1, 4- 1-3, 2- 1-9 (left shoulder and right side) When knitting 36 rows, add stitches under the armpit, press 2- 1-6 to add stitches, and then add 5 stitches on each side. The total number of stitches is 72, the length is 23 cm, and the required length does not increase or decrease.

Second, the back piece: start with a 6mm stick needle 12, knit 2 pieces, press 2- 1-2 to add stitches (left shoulder plus right side, right shoulder plus left side), then add 22 stitches at the back collar, connect them to knit the back piece, and add 36 rows of stitches under the arm, press 2- 1-6.