What are the immigration policies for buying a house in Sweden?

Sweden is one of the countries with the cleanest government, the most advanced technology and the richest life in the world, and also has the largest number of multinational companies per capita in the world. The preferential policies for purchasing houses are as follows: foreign doctoral students will obtain permanent residency in Sweden after four years of study. Foreign college students (undergraduate and master) can stay in Sweden for 6 months after graduation, and use this time to find a job or start a business in Sweden. Family members who come to Sweden to accompany them will be granted residency for a longer period of time than the current regulations, and they will be able to work more easily. The Swedish National Assembly will make a decision on this new policy in the near future.