Because if you want to buy a house in Hainan, you must comply with the local purchase restriction policy, and Hainan is a city with a domestic first-class purchase restriction policy. In order to avoid the situation of driving up housing prices, relevant regulations have also been introduced. For example, if you want to buy a house in a main city like Haikou, you need at least five years of social security or a tax. If you buy a house in the name of a company, you must have a tax record of nearly one year, you must buy a house at one time, and the company as a legal person must live in Hainan for five months to meet the requirements.