What is the meaning of "red dragon" in Taoism?

The red dragon refers to the red dragon, which is used as a metaphor to be an emperor, the sun, a warship and so on. Used in China's ancient classics. In Taoism, it means the tongue. There are also game characters named after this.

Red dragon. Legend has it that god rides. (Emperor) and Bing Ding killed the Southern Red Dragon. "Mozi's Return to Righteousness" was written by Tao Angong, a master of casting and smelting in Lu 'an ... Suzaku stopped smelting and said,' Angong, Angong, metallurgy and heaven are interlinked. On July 7th, you will be greeted by a red dragon. In due course, the red dragon will arrive. Han and Liu's encouragement technique is "Biography of Immortals" and meritorious deeds, and immortals look forward to the Red Dragon. Qi's poem Autumn Sunset in the Drugstore. The 47th Biography of Feng Ming Menglong in the Eastern Zhou Dynasty: "I lived for about half a year, and suddenly one night, the couple played the flute under the moon, so there was a purple phoenix on the left stage and a red dragon on the right stage."