Chinese officials in Beijing have introduced tough property restrictions in the capital amid growing concerns over a property bubble. In an effort to cool down the capital's property market, permanent residents will be limited to buying two apartments while others will be restricted to just one property. Prices in Beijing and in many cities across China have risen dramatically in recent years. The authorities blame speculation for driving up prices and creating a shortage of homes. Many Chinese invest in apartments because the returns are often higher than the interest paid by banks.