I was cutting the onions.I wonder how to cut onions without tears. I looked it up online. Someone said two ways works as following. One is to freeze onions. The other way is to cut them under a kitchen vent. Before knowing these tips, I didn't freeze onions but putting them in the fridge for about 15 minutes. And I didn't chop them under my kitchen vent. Next time, I will combine the two methods.