Guangdong Haiqing Temple. English Wak Hai Cheng Bio, one of the oldest Taoist temples in Singapore. It was officially rebuilt as a double temple in 1826, and the Lord worships Mazu and Xuantian God. It is the oldest Mazu Temple and Xuantian God Temple in Singapore. After nearly two hundred years of glorious history, the Qing Temple of Guangdong became a protected national monument in Singapore in 1996, and after a large-scale restoration, it was awarded the United Nations Asia-Pacific Cultural Assets Preservation Merit Award in 2014.