What does it mean that "Zhang Ye is gold and Wuwei is silver"?

It means that Zhangye and Wuwei are good places in Gansu, and "Golden Zhangye" and "Silver Wuwei" mean that these two places are rich in products.

Zhangye is known as "the hometown of Sang Ma", a land of plenty. Rich in wheat, corn, rice, beans, oilseeds, fruits and vegetables, it is an important node of the ancient Silk Road. Zhangye has a long history, splendid culture, beautiful natural scenery, unique cultural landscape, rich products and profound cultural heritage, and was called "Golden Zhangye" by the ancients.

Wuwei has a profound cultural accumulation, but in ancient times, it was nicknamed "Yin Wuwei" because the yield of crop varieties was slightly lower than that of Zhangye.

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The origin of Zhangye place names:

The place name of Zhangye originated from "expanding the country and connecting the western regions", which reflected Zhangye's position on the ancient Silk Road to some extent. Zhangye was originally the site where the Huns were king, so it was called Yaode. The Han Dynasty changed its name to Zhang Ye, which means to stretch China's arm and be "rich and powerful".

The significance of "Dunhuang studies" actually does not refer to the scale of the county governing the city at that time, but symbolizes that the civilization and morality of the Han Dynasty are as prosperous as the sun and the moon. Therefore, the first word should be stewed or baked with fire, and the evasive word next to the word without fire should be written with vulgar brushwork. The names of the two counties show that Emperor Wu of the Han Dynasty was both civil and military, and he was a great talent with both rigidity and softness.