The blueberry garden of Tiangong Manor covers an area of 30 mu and grows 8 varieties of blueberries. Six of these varieties have been put into production for harvest. There are early maturing varieties O 'Neill, Sharp blue; Medium varieties peak, brilliant, Teff blue; Late variety garden blue, the picking period is in June and August every year. Blueberries are a treasure, known as "golden berries", "magic fruit", "oral cosmetics", women eat skin good, children eat eyes bright. During World War II, all British pilots flying night bombing missions were required to drink drinks made from blueberries because blueberry juice enhanced their eyesight. In addition, blueberries also delay brain aging, enhance memory, anti-cancer and other effects, has been listed by the United Nations Food and Agriculture Organization as the world's top five health food.