The rising trend of county housing prices is caused by multiple factors. First of all, speculation is an important factor to promote the rise of county housing prices. Due to the government's efforts to control housing prices, there is limited room for housing prices to rise in large and medium-sized cities, and the expected speculative interests are reduced, prompting many real estate developers and real estate speculation funds to start transferring to the county. In the county seat, high-grade buildings and villas under construction can be seen everywhere, and it is reported that the house price has exceeded 10,000 yuan. In addition, due to the impact of inflation expectations, residents of some large and medium-sized cities are also willing to buy houses in counties with relatively low housing prices in order to preserve and increase their value. This model of "making money in big cities and preserving the value in county towns" has attracted people to buy houses in county towns, thus promoting the rapid rise of house prices. For example, Dachang County, Hebei Province, which is adjacent to Beijing, has attracted many Beijingers to buy houses because of its convenient transportation and cheap housing prices. Housing demand is expanding rapidly, and house prices are rising rapidly. At the end of 2009 10, the average price of newly opened buildings was still 2600 yuan/square meter, but by the end of March this year, its average house price had soared to 5000 yuan/square meter, an increase of nearly 100% in less than half a year. Therefore, with the large-scale inflow of speculative funds, county housing prices will accelerate. Secondly, the growth of market demand has promoted the rise of county housing prices. The livable characteristics of the county town attract many people to settle in the county town. For example, retired people in cities, migrant workers with a certain accumulation, cadres and rich peasants in surrounding towns and villages, and migrants engaged in various businesses are all willing to buy houses and live in county towns. Therefore, in recent years, the demand for buying houses in county towns has increased rapidly, leading to rising house prices. Thirdly, the continuous rise of construction land prices has also promoted the rise of housing prices. In order to alleviate the financial difficulties, the local government adopted the method of bidding, auction and hanging to sell the land, which also contributed to the rise of house prices in the county.