What is the jade from Kungang?

It means: there is jade in Kunlun Mountain.

From: "Thousand Characters"

It rains in Yun Teng, and dew turns into frost. Gold comes from Lishui, and jade comes from Kungang.

Interpretation: Clouds and air rise in cold to form rain, and dew condenses in night to form frost. Gold is produced in Jinsha River and jade is produced in Kunlun Mountain.

Extended data:

Literacy textbooks specially used for enlightenment have appeared in China for a long time. There were Cang Xie and Gui Li in Qin dynasty, Fan Jiang in Sima Xiangru, Gu Xi in Jia's family, exhortation in Cai Yong and urgent chapter in You's family in Han dynasty, and in the Three Kingdoms period.

Although Urgent Chapter is a prominent primary school book after Cang Xie Pian, due to various problems in its circulation, its authority was not as good as before in the Northern and Southern Dynasties, and some enlightenment books such as Gu Ting and Friends in this period were limited in readability. It is against this background that thousands of words came out.