 However, the colors of a Chinese Buddhist monastic's robes often corresponded to their geographical region rather than to any specific schools.By the maturation of Chinese Buddhism, only the Dharmaguptaka ordination lineage was still in use, and therefore the color of robes served no useful purpose as a designation for sects, the way that it had in India.During the Tang dynasty, Chinese Buddhist monastics typically wore grayish-black robes, and were even colloquially referred to as "Ziyi" (), "those of the black robes."