开采煤始于西汉文帝前元元年（公元前179年）左右；

Mining of coal came into being in 179 B. C.

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公元581年隋文帝改楚州为渝州，重庆始简称“渝”。

Chuzhou changed in 581 AD as Emperor Wen Yuzhou, Chongqing before the "Yu."

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隋文帝开皇三年（公元583年），改金城郡为兰州，置总管府。

Wong Sui Wendi opened three years (AD 583), to the county for the Jincheng, Maryland, home Explorer House.

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