During the season, about 300 households in Hiep Hoa, Bac Giang can earn thousands of dollars thanks to the old trees in the garden.
That is a true story in Hoang Van commune (Hiep Hoa, Bac Giang).In Van Xuyen village, there are more than 300 households, every house has at least one ancient black oak tree in the garden. In the season, each tree can be harvested from several tens of kilograms to tens of kilograms of fruit.