1 profound theory (in Daoism and Buddhism)

2 mysterious principles

1 Black Tortoise (the seven mansions of the north sky)

2 (in Daoism) God of the north sky

1 Xuanwu (Black tortoise) district of Nanjing City 南京市 in Jiangsu 江蘇|江苏

1 entrance hall

2 vestibule

1 Tang Emperor Xuanzong (685-762), also known as Emperor Ming of Tang 唐明皇[Táng Míng huáng], reign name of seventh Tang emperor 李隆基[Lǐ Lōng jī], reigned 712-756