Can a Chinese man live with a Lao woman in Vientiane?

Yes. According to Lao law, it is possible to cohabit in Vientiane, Laos, but certain conditions must be met. For example, both parties must be at least 18 years old and must have a certain financial ability to afford the cost of cohabitation. They must have a certain sense of social responsibility and must not engage in bad behavior or disrupt the local social order. There must be a certain degree of cultural literacy and no uncivilized behavior. Only if these conditions are met can you cohabit in Vientiane, Laos.