Which emblem is purple?

The purple emblem is the purple emblem star in the Big Dipper, representing nobility.

Purple light source

In Mianzhu, Sichuan, the Huaihe River was harmed by helplessness in ancient times. Dayu sent Lu Tong and Ebony to appease it, but it was defeated by helplessness. Dayu also sent Chen Geng (Wei Zi Xing Jun), the god in charge of time, to escape without support; The helpless prayer, though vigorous and agile, was not as fast as Chen Geng's and was captured by Chen Geng. Dayu also ordered the unsupported prayers to be chained up and pressed at the foot of Guishan Mountain in the lower reaches of Huaihe River, thus reducing the water damage. The picture shows an unsupported prayer being captured and locked on a carved pole.