It's the statue of the ancestor of Maoshan, which is the three true lords. They are the nominal grandfathers of Maoshan. Mao Ying, the eldest, was named as "a true gentleman when he went to the imperial palace for nine days, and the second, Mao Gu, was named as" a true gentleman when he was in the middle of Maodi Fairy, and he was forbidden to go to the right road, and he was named as "a true gentleman when he was in the lower reaches of Maodi Fairy".
Extended information
Maoshan School, another name of Shangqing School, is called Maoshan School because it is located in Maoshan. It is also divided into northern and southern Maoshan Taoism, with the northern Maoshan as the founding place and the southern Maoshan as the founder of Luofu Mountain in Guangdong today. Shangqing School was actually created by Maoshan, Tao Hongjing, Nanliang, hence its name.
in addition to Tao Hongjing, a great master, there were immortals in the pre-Qin dynasty, Li Ming and Zuo Ci in the Qin and Han dynasties, Wei Huacun, Yang Xi, Xu Mi and Xu Cheng, the founders of the school, and Ge Hong, a famous Taoist master of the Southern School, in the Northern and Southern Dynasties, Lu Xiujing and Sun Youyue, and Wang in the Sui and Tang Dynasties. In the Northern Song Dynasty, Longhu Mountain and Hezao Mountain were the three major schools of Daoism, known as Sanshan Fuyou.
reference source
Baidu Encyclopedia-Maoshan School