He fled south after the Jurchens overran Kaifeng in the Jingkang Incident of the Jin–Song wars, hence the beginning of the Southern Song dynasty 1127–1279.
Tang Lum, the eldest son of the royal couple moved to Lung Yeuk Tau at the end of the Yuan dynasty.
As the clan prospered it further branched out to the neighbouring area, establishing the present-day "Five Wais and Six Tsuens" within a few hundred years.
Apart from the communal worship in spring and autumn and Tin Hau Festival, a lantern lighting ceremony is also held for the new born baby boys on the fifteenth day of the first Lunar month.
It is one of the largest ancestral halls in Hong Kong, it was built in the early 16th century in memory of the founding ancestor, Tang Chung Ling (鄧松嶺) (1303–1387), the sixth generation descendant of the clan.
The chamber to the left is dedicated to the ancestors who had made significant contributions to the clan or those who achieved high ranks in the imperial court.
The chamber to the right, on the other hand, is for the righteous members of the clan, one of whom is Tang Si-meng, a brave servant who saved the life of his master.
The whole building is decorated with fine wood carvings, polychrome plaster mouldings, and murals of auspicious motifs.