Chinese nationals selling copper as gold fools jewelers across Vietnam
Four people have been arrested: Chinese nationals Chen Zhizhi, 38, and Tang Liang, 39, and Vietnamese women Nguyen Thi Lua, 31, and Nguyen Thi Lan Anh, 25. A fifth suspect, Sung Thi Hoan, 26, had her home in Lao Cai Province that borders…