Dehua Hall, designated as a Level 3 historic site, is one of the three Longhua Sect(Dragon Flower) vegetarian halls in Tainan. Established during the Qianlong period of the Qing Dynasty, it originated when Longhua Sect missionaries safely arrived in Anping and founded Huashan Hall. Later, during the Daoguang period, devotees funded the establishment of Dehua Hall. During the Japanese colonial era, to ensure its preservation, Dehua Hall, along with other Taiwanese temples, integrated into Japanese Buddhism. In the Taisho period, Huashan Hall was demolished for road expansion and merged into Dehua Hall, which also had to remove part of its structure for the same reason. During World War II, Dehua Hall suffered damage from American air raids, destroying its flanking rooms. Post-war, it underwent several renovations to achieve its current form.
As the Longhua Sect practices lay Buddhism, Dehua Hall's architectural features resemble traditional residences. The main entrance has a concave shou (longevity) shape, adorned with paintings of the Four Heavenly Kings. Inside, two statues of Guanyin Bodhisattva are enshrined, with the sect's patriarchs placed to the right. In front, three chairs symbolize the three founding masters of the Longhua Sect. The main hall features two murals by Pan Li-shui(Taiwan Temple Artist), adding to its cultural significance.
