铸山煑海

Explanation: "Historical Records Wu Wangbi Biography": "Wu has Yuzhang Tongshan County, 濞 the world fugitive incurred Pirates mint coins, Zhu seawater for salt." That the exploitation of the mountains to cast copper coins, cooking water to obtain salt. Later "cast Mountain Zhu Hai" as a metaphor good at developing natural resources. Song Su "table view of the monument loyalty": "and Wu Yue place thousands of miles, with a hundred thousand, cast mountain Zhu sea, as the rhino bead of the rich, a in the world." Song Li Gang "Money of the": "Discussion Gu Zheng, cast Shan Zhu Hai, stabilization City easily, Hong alum of the class to take tea, not too much. "