Who is the incarnation of the dragon tree layman?

From Wang Rixiu's Pure Land of Dragon Trees

Wang Rixiu (1105—1173), a famous Buddhist, was originally from Shucheng, Bozhou, Anhui. In Song Gaozong, Wang Rixiu is a Chinese scholar. He is knowledgeable and charitable.

Wang Rixiu was a master of Confucianism in his early years and was famous for his rule of Confucianism. He has a lot of experience in the Book of Changes and Spring and Autumn Annals. According to historical records, there are as many as eight Confucian works by Wang Rixiu, with a total of 80 volumes, which are quite distinctive.