The place to acquire earthworms was quite hard to find, situated in a rather remote area on the outskirts of the city, in a feed factory.
The number of households that raise earthworms has decreased significantly. When Yan Fei asked a knitting older woman sitting at the entry, she gave him information warmly after learning about his interest in selling earthworms.
There are not too many people who come to sell earthworms to the factory, so there's no specific place appointed for the transaction. The older woman told Yan Fei that if he brought earthworms, he could directly deliver them to the warehouse. The person in charge of it would handle the buying process, assuring him that there are always people present at the warehouse.
This was very convenient because he didn't need to worry about finding no one there. He could go whenever he wanted.