Chinese folk religion
Sometimes, it is classified with Taoism: Over the centuries, Taoism became institutionalised. During that time, it tried to use local customs, and to become similar to local religions and beliefs.  It would however be more accurate to say that Taoism developed from Shenism, since Shenism was there before. Taoism also developed from Chinese philosophy. With around 454 million adherents, or about 6.6% of the world population, Chinese folk religion is one of the major religious traditions in the world. In China more than 30% of the population adheres to Shenism or Taoism.