What are the functions of these dragon kings? The first is to protect Buddhism and guide all beings. For example, Wang Long at the end of the earth, ranked 19 in the 20 "days" of Buddhism, is a "magic weapon" for worshipping and protecting Buddha relics, Buddhist scriptures and other buddhas as as a patron saint, although it is Neptune who is in charge of water snakes in Han legend. In the Sutra of the Sea Dragon King translated by Zhu Fahu in the Western Jin Dynasty, there is also a story that the Dragon King invited the Buddha to the Dragon Palace in the sea to support him, and invited "Buddha and others" to be his "countless family members". The second is to spread sex and rain to eliminate disasters. The Hua Yan Jing says that you big dragon kings "make sex and rain frequently, which makes all living beings angry." This is consistent with China's native Longxing Yunbu dialect.