Ly Van Dung in Yen Binh hamlet, Phu Binh commune (Chiem Hoa) prepares food for his herd of cows.

Earthworms are raised by him with two feeding methods: floating on the surface and sinking under the surface. To have a source of manure for earthworms, he invested in breeding cows.

In order to meet the needs of consumers, Dung has also bought a earthworm fertilizer press machine and packed the product for sale.

He raises cows for a food supply fof earthworms.

In 2022, he sold 6 calves, 40 tons of earthworm manure, and more than 5 quintals of frozen earthworms. Through social network, he provided seed and transfered earthworm farming technique to nearly 20 households both inside and outside the province such as Ha Giang, Hanoi, Vinh Phuc, etc.

He creates a variety of products from earthworm fertilizer.

Dung's economic model has now brought a stable source of income for his family. In 2022, he earned over VND300 million from earthworm raising.