First lock the needle from 5, and then pull it from one end to the other.
Cycle 1: hook 4 groups (3 lengths and 2 locks) in five centers, count the standing needle as 1 needle, and finally pull it out with the standing needle.
Turn 2: Pull out 3 stitches to 2 stitches to the left, and hook 3 long 2 locks 3 long 2 locks (hereinafter referred to as V flowers) at the gap of every 2 stitches.
The third lap: first pull into the gap of the V-shaped flower. The hook length of the circle in the gap between the V-shaped flowers is 3, the lock length is 2, and the hook length in the gap between the other two lock needles is 3. Finally, pull it out with a vertical needle.
The rule of each circle behind: hook the V flower in the gap between the V flowers, and hook three long needles at the intersection of every two patterns.
If you want to hook into a rectangle, the hook method of 1 circle is the same; On the second lap, hook 3 is long, 2 is locked, and 3 is long 1 is locked at 2 lock needles; At the third turn, tick the V flower at the V flower gap, and tick 1 lock at 1 lock, with a length of 3, 1 lock; Repeat this rule every round, tick V among V flowers, tick 1 lock at 1 lock, and the length is 3, 1 lock. (The picture below shows a rectangular piece on the left and a square piece on the right). Please choose according to your own needs.