Which mythological dragon king does the phrase "calling for wind and rain" refer to?
The Dragon King is the king of the water tribe in ancient Chinese myths and legends, in charge of the clouds and rain, and is one of the four spirits. Legend has it that the dragon can move clouds and rain, eliminate disasters and bring good fortune, symbolizing auspiciousness, so the dragon dance to pray for peace and a good harvest has become a custom in all parts of the country's folklore.
The Taoist "Taishang Dongyuan Divine Mantra Scripture" has a "Dragon King Pin", which lists "Dragon King of the Five Emperors", "Dragon King of the Four Seas", and "Dragon King of the Four Seas", which are differentiated by directions. There are 54 names of Dragon Kings and 62 names of Divine Dragon Kings distinguished by heaven and earth.
Expansion:
The job of the Dragon King is to raise clouds and spread rain to eliminate heat and troubles for the people, and the Dragon King's cure of water has become a common belief among the folk; the day of the Dragon King's divine birth varies in various documents and folklore across China.
In the old days, the temple dedicated to the Dragon King was almost as common as the temple of the city god and the land. Whenever the wind and rain were out of balance, when there was a long drought and no rain, or when the rain did not stop for a long time, the people would go to the temple of the Dragon King to burn incense and pray in order to ask the Dragon King to rule over the water, so that the winds and rains would flow smoothly.
Baidu Encyclopedia - Dragon King (Ancient Chinese mythological king of the aquatic race)