Zhang Daoling   (also known as Celestial Master Zhang) Taoist leader, from the second century A.D., who converted the philosophical ideas of Taoism into a popular religion. He is said to have written approximately 24 works of Taoist scripture, cured the sick through incantation, and taught people to confess their wrong deeds. The image of Zhang Daoling riding a tiger became popular for expelling insects, curing diseases, and protecting the family from calamity.