In Five Miscellanies, this sentence is not Song Huizong's request for Ru kiln porcelain, but the highest instruction for Chai kiln porcelain from Zhou Shizong and Chai Rong after the Five Dynasties.
Volume 12 of "Five Miscellaneous Notes" records: "(Chai kiln porcelain) was fired when it was spread to Chai Shizong, and the secretary invited it to be colored. Yu Yun said:' Rain has broken the sky, so color will make the future. Chai Shizong in this article is Chai Rong in the post-Zhou Shizong era. Legend has it that a batch of porcelain he ordered to burn turned blue after the rain, so it was called "Chai Kiln".
Extended data:
"After the rain, the sky is clear, so the color will be in the future." It is used to describe Song porcelain. The Song Dynasty was the heyday of China porcelain, with five famous kilns, namely Ding, Jun, Guan, Ge and Ru kilns. Among the ancient porcelains in China, Song porcelain is unique in the history of China ceramics because of its elegant shape, pure glaze color and exquisite pattern.
Like a hat bowl, the lines are simple but full of tension. At the same time, although the Song Dynasty porcelain was mostly monochrome porcelain, it had a great feature that other dynasties' porcelains could not match, that is, seven points of labor and three points of nature. If it was in the Ming and Qing Dynasties, landscape paintings were usually used to express landscapes on porcelain, but in the Song Dynasty, porcelain was made with poetic interest.