What are the grades of Taoist purple robes and yellow robes?

The purple Taoist priest is a master, written by Huang Dijun.

In the modern society with advanced technology, people are surrounded by suits and ties. Occasionally, a Taoist priest wearing a Taoist robe, square shoes and golden road will appear, and the rate of turning his head is quite high. Because in people's impression, most Taoist priests live in seclusion in the deep mountains and forests far away from the noise of the world, or practice behind closed doors in Taoist temples. Taoist priests don't ask worldly affairs, hoping to realize truth through practice.