According to legend, a Dutch ship wrecked off the coast of Hengchun, and all the men were killed by a tribe of indigenous people living in nearby Guizijiao (龜仔角, now Sheding 社頂).

The tribesman took eight items off of Margaret: a pair of klompen, a silk scarf, a pearl necklace, a ring with gemstones, a leather suitcase, earrings, a feather pen, and paper; these eight items were later known as babao (literally "eight treasures").

The Rover shipwrecked in Taiwan in 1867, and its crew, including Mercy, were killed by indigenous people.

Over the next three years, the region was plagued with misfortune, so residents hired a tongji, who said that the remains belong to a White woman whose spirit is wandering around causing trouble, and a third of the temple's space should be allotted to her for her spirit to settle down.

When the temple was completed, another tongji from Sheding claimed that the White woman was Princess Babao from local legends, and the remains were worshipped as such ever since.