China people usually come back after working in Dubai for several years.

Three years. Dubai is the most populous city in the United Arab Emirates and the capital of Dubai, one of the seven Emirates in the country. China people usually go to Dubai to work and come back three years later. The validity period of Dubai work visa is three years after it is issued, and you can stay for up to three years after entering the country with a work visa, and you can make multiple trips, during which you can enter and leave the country normally at any time.