Was it illegal to immigrate to the college entrance examination 30 years ago?

It was illegal to immigrate to the college entrance examination 30 years ago. Before 1985, China's college entrance examination registration and examination were conducted according to the location of household registration. If you want to take the college entrance examination in other places, you need to move back to your domicile first, and then sign up for the exam at your destination. Therefore, in order to avoid this complicated process of moving households, some people may take illegal ways to immigrate to the college entrance examination, such as using false identity information to enter the household or borrowing other people's accounts. This violation belongs to improper means.