How do immigrant customers charge for calling 100 10?

Immigrant customers call China's 100 10 abroad for international calls. Prices are different in different countries. Calls from African countries are basically around 20 yuan, and calls from the United States and Canada are around 10 cents. If you are asking mobile customers how to dial 100 10 with their mobile phones, I can tell you that it is not free according to the ordinary call standard.