White Dragon Fairy is the legend of which fairy family?

Now some places worship the white dragon fairy, but people don't seem to remember this fairy. So which fairy family does the white dragon fairy belong to?

Bailongxian is a little white dragon, and there are indeed many places to worship it. At this time, the little white dragon was touched by Guanyin Bodhisattva, turned white and became the mount of Tang Priest. After eighty-one difficulties, I finally got back the true scripture and made it a positive result. At that time, when Xiaobailong Road passed a small village at the source, it was surprised to find dozens of villagers sitting naked in the sun at the head of the village. Small white dragon thought, it is still early autumn, and the weather is not cold. Why are they so abnormal? He pressed the cloud head and looked at it carefully. He saw that the villagers' heads and bodies were covered with scabies, which made them itch terribly. I couldn't stand the itching, so I took off my clothes one by one, scratched each other, and even scratched my skin, and smelly yellow pus came out. Seeing them in pain, Xiaobailong used his magic to create a spring. People don't know what happened. Later, Xiao Bailong gave them a dream and said, "As long as you bathe in hot spring water often, you can detoxify and beautify your face and cure scabies." Slowly, people get better. In order to thank the little white dragon for saving them, the little white dragon is called the white dragon fairy and has been enshrined until now.

Bailongxian is a little white dragon. Because the little white dragon turned into a hot spring and cured the villagers' illness, the villagers have always worshipped it.