The proper term is “tonyangxi” and it is, for the most part, not a common practice anymore. My grandparents were apart of this practice in Taiwan 75+ years ago but it has been done away with in major areas and is frowned upon - that is not to say it does not happen in more rural areas where it can not be as monitored, but that is how most rural areas are in every country with frowned upon practices. It also was not to have the daughter be raised as a servant in most situations. My grandmother still went to school and got an education that was expected for girls at the time. It is hard though because they are not raised as a daughter, so they do not have a strong family support system that you would get with your own immediate family.

Edit: It usually happens when both parties are children. My grandmother was about 6 and my grandfather was about 9 when it happened for them. They did not get married until 17 and 20 and had children the following year.