Mr. Tran Van Thang has found a profitable way to raise quails by making their own food with earthworms, shrimp heads, and meat quails, which he sells at a higher price than industrially farmed quails. With an initial investment of 100 million VND and experience learned from raising quails, Thang has created a profitable business, harvesting over 2,250 eggs daily and selling meat quails for a profit of 200,000 - 300,000 VND/day. This new farming model, using natural food sources, has been praised by the Ninh Trung Commune Farmers' Association as a way to bring stable income and is encouraged to be replicated by the union. The article emphasizes the importance of providing farmers with essential knowledge about quail farming techniques and requirements for success in this business.