Serious problems with transparency, and the quality of data used for the CPI and property prices index prepared by China's National Bureau of Statistics. The statistics are seen as flawed by experts because they understate the serious property price bubble in China. It does this by diluting the large rises in big cities with smaller rises in smaller cities. From now on data will be published separately for each of the 70 cities that make up the index, and a new method will be used for calculating property prices that only looks at housing, not commercial property. For housing prices it will use data from online property registries, instead of a survey of transactions that earlier understated housing price increases.