Peeling onion without crying

Normally, when we peel the onion , we are always crying without reason. Thus, we have the good tips for everyone about how to peel the onion without crying as follows.
For putting in the refrigerator, we should bring the onion without peeling in the refrigerator for 30 minutes before cooking because of the coldness aiding Sulfur evaporating into your eyes more slowly.
For pouring vinegar on the chopping block, it is known that the vinegar contains of the chemical inhibiting the dispersing of Sulfur on the onion to feel irritation on your eyes. However, this method has few disadvantages due to the changing of the onion’s taste.
For cutting the root of onion after peeling, it is known that the area close to the root of the onion has most Sulfur composition ; thus, the correct method to peel it is to cut the root after peeling it.