Who is in Dongbao, Ya Dan?

Lv Dongbin. According to Volume 8 of the Lantern Festival, there is a cave on the top wall of Daoguang Temple, which is said to be one of the places where the Eight Immortals made an alchemy in Lv Dongbin. So Lv Dongbin is in the cave of Danyabao. Ya Dan is often shrouded in clouds, and there are white clouds in his heart. At the top of the hidden temple is a treasure cave in Ya Dan, which is said to be an alchemy site of the Eight Immortals in Lv Dongbin.