Onion is also known as globe onion, round onion, jade onion, garlic chives, and Dutch onion.There are many theories about the original place of origin of onions, but it is generally believed that they originated in highland regions of southwestern Asia, Central Asia, Iran, and Afghanistan.The origin of onions dates back more than 5000 years. By around 1000 BC, they had spread to Egypt, later reaching the Mediterranean region, arriving in America in the 16th century, Japan in the 17th century, and China at the beginning of the 20th century.Onions are widely cultivated throughout China, with cultivation present in both southern and northern regions. The planting area is continuously expanding, making it one of the main vegetables grown in China today.China has become one of the four major onion-producing countries (China, India, United States, Japan).The primary areas for onion cultivation in China include Shandong, Gansu, Inner Mongolia, and Xinjiang.
