Why is Beijing banning the sale of small serviced apartments?

The apartment is a commercial project. In other words, when the developer obtained the land use rights, its purpose was to build a hotel. The property rights of hotels are 40 years, which is cheaper than residences. However, hotels are not as profitable as residences, and residences in China are more expensive than hotels, so developers divide them into small houses and sell them as residences

That is It was said that the developer had taken advantage of the loophole, so it was stopped