Which Taoist immortal is generally worshipped in Niangniang Temple in China?

Niangniang Temple is the most popular temple in China, and the main gods enshrined in it vary from temple to temple, usually Yuan Jun in Bi Xia. In northern China, people have a strong belief in Bi Xia Yuan Jun. Believers regard her as a god and answer her prayers.

Bi Xia Yuan Jun has great magic power. It can not only bless agriculture, commerce, tourism and marriage, but also save lives, especially enable women to have children and ensure the safety and health of children.