How to Find Your Family's Qiaopi Letters: A Hands-On Guide to Wuyi Remittance Archives Between roughly 1850 and 1950, millions of men from the Siyi (四邑) and Wuyi (五邑) counties of Guangdong left for the gold fields, railroads, laundries, and kitchens of North America, Australia, and Southeast Asia — and many of them wrote home.…