Wash the onion and cut it in half with a knife. Take half of the onion, first cut 1 knife vertically, and then cut 1 knife vertically at a distance of two fingers on the side. Cut 1 knife horizontally along the two vertical lines, and then cut 1 knife horizontally at a distance, and put the cut onion into the water to break it up.

1. Wash the onion and cut it in half with a knife.

2, take half of the onion, first cut 1 knife vertically, and then cut 1 knife vertically next to it at a distance of two fingers.

3. Cut 1 knife horizontally along the two vertical lines, and then cut 1 knife horizontally at a distance, and put the cut onion into the water to break it up.