Okay kiddo, so you know how different people come from different countries and speak different languages? Well, sometimes people want to move to a different country to live there permanently. That's called immigration.
In Romania, people can immigrate if they follow certain rules. They have to get a visa to enter the country and then apply for a residence permit if they want to stay longer.
Now, there are different categories of people who can immigrate to Romania. Some people might come for work, others for family reasons, and some might be refugees who need a safe place to live.
But no matter what the reason, everyone who wants to move to Romania has to follow the rules and make sure they have the right paperwork. This helps keep things fair for everyone who wants to live in the country.