Cao Heng, a 47-year-old deaf survey engineer, was honoured as a labour hero in Jiangsu Province and elected a council member of the Chinese Society of Surveying and Cartography this year.Cao lost his...
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Cao Heng, a 47-year-old deaf survey engineer, was honoured as a labour hero in Jiangsu Province and elected a council member of the Chinese Society of Surveying and Cartography this year.Cao lost his...