Between the Ming Dynasty Hongwu, feudal official is opened in Jingdezhen " drive implement factory " , also renown " drive kiln factory " , make drive china technically for palace. The Jingdezhen be subordinate to at that time belongs to county of Jiangxi float bridge, draw near the prosperous, porcelain industry that nurtures the county such as this world of city of city, abundant, Le Ping, wave hears Jingdezhen open " drive kiln factory " after the message, collect Jingdezhen in succession, among them with the prosperous, porcelain industry strength that strokes a city is most. Drive porcelain demand is high, production difficulty is great, always choose " drive kiln factory " porcelain labour is the skillful craftsman with a few excellent craft that make china, the beautiful that builds the drive porcelain that go out all is choiceness to come via their hand is tasted, "Cup of 9 dragon justice " it is among them a kind.

    Say as it is said, the float bridge county at that time makes to please an emperor, earn the appreciate of the emperor, instruction " drive kiln factory " porcelain is made inside industry half an year give a kind " 9 dragon cup " use pay intribute the emperor, good admire, bad to be punished. After the instruction is given out, prefectural lord personally supervise the manufacture of. As a result of " 9 dragon cup " production difficulty is great, time short, porcelain is versed in people each gets uneasiness of sleeping and eating urgently. They are developed day and night, develop everybody's intelligence an wisdom adequately, through 3 many months, a few experiment repeatedly, scored a success eventually. See purificatory " 9 dragon cup " , county too father light up with pleasure, personally whip and spur will " 9 dragon cup " send to the capital, pay intribute the emperor. The artistic curiosa that Zhu Yuanzhang of big fierce emperor looks at float bridge county to make enter chastity " 9 dragon cup " , fondle admiringly, speak highly of Jingdezhen porcelain to be versed in repeatedly the craft that make china is excellent, praise Jingdezhen is worthy of be porcelain say. As a result of,float bridge county makes pay intribute have rendered great service, got the appreciation of the emperor, add an official to promote before long, by the county your preferment is government office stage.

    Zhu Yuanzhang gets " 9 dragon cup " hind, often use this kind of curiosa to fill chancellery of wine fete civil and military. Be in on the banquet, Hongwu emperor is intended chancellery of a few confidential drinks award more a bit wine, buy drive wine completely for them designedly, and right a few otherer the chancellery that likes call a spade a spade to take expostulate with sincere advice at ordinary times sifts wine shallowly. Result things go contrary to one's wishes, those a few chancellery that are taken care of of purpose by the emperor nod wine to was not drunk, drive wine is all from " 9 dragon cup " bottom light leak, and other secretary is drunk cheerfully went up the drive wine that the emperor bestows. The emperor is to indissoluble very to this, investigate its reason, just know this cup to fill wine most fair, when filling wine can shallow smooth, cannot pass full, otherwise, the wine in the cup can leak entirely, not remnant.

    To be written down sincerely " 9 dragon cup " justice, Hongwu emperor " 9 dragon cup " name for " cup of 9 dragon justice " . Content with one's lot person water is put, grabber water is used up. "Cup of 9 dragon justice " literary quotation told people to handle affairs must justice of be particular about, humanness cannot flay a flint.