| White soft soil White soft soil. "The book Yugong": "Jue soil but white soil, but on the wrong Jue Fu." Cai Shen Collection Biography: "Yan said: 'soft soil, saying Pyongyang.'" "Jinshu Wen Yuan Chuan into a public-sui ":" Green wing white soil, mud Tu Jing Heng, Hai Dai Akabane, Hua Liang Qingli. " |
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