1. In the vocational skills training class of Anfeng high-quality farmers, Chen Baokuan, director of the Green Vegetable Research Institute and extension researcher, was introducing the matters needing attention for efficient planting of green onions, so Yancheng Dongtai green onion planting training class was established.

2. Yancheng, formerly known as "Du Yan", is a prefecture-level city in Jiangsu Province, People's Republic of China (PRC), located in the central coastal area of Jiangsu Province. The total land area of the city is 17700 square kilometers, and the coastline is 582 kilometers long.