What's the charge for using the number 176 in Vietnam?

After China Unicom, the charging rules for paying users roaming to Vietnam are as follows: dialing a local number in Vietnam or answering a local phone to call Chinese mainland is 2.86 yuan/minute, dialing Hong Kong, Macao and Taiwan and other countries and regions is 9.86 yuan/minute, sending short messages to Chinese mainland (excluding Hong Kong, Macao and Taiwan) is 1.26 yuan/article, and sending short messages to Hong Kong, Macao and Taiwan and other countries and regions is 1.96 yuan/article;

For more tariff details, please visit China Unicom APP and select: Service-Handling-International, Hong Kong, Macao and Taiwan Business-Outbound Roaming.