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Who knows the specific information of the Hui Zhang family who dug gold in Xining?

His family is not from Xining, but from Dacai Township, Huangzhong County. He made a fortune by digging for gold, and all his children were studying abroad. An asphalt road was built, a primary school and a free hospital were built. Donated a lot of money to the 2008 Olympic Games, and the family was very broken. . . . . . These are all hearsay. . .