Hybrid cars, which add an internal combustion engine to pure electric vehicles, aim to reduce the pollution of cars and improve the mileage of pure electric vehicles. Hybrid vehicles have serial and parallel structure. China's understanding of the market is mainly based on mechanical reference to western economic theory, but it ignores their assumptions and implicit assumptions. China's so-called mainstream economists' understanding of the market is more of a new classic. In other words, the market is an efficient allocation of social resources pricing mechanism. Although China has introduced new institutional economics, it has not read the meaning of "property rights", and mechanically believes that property rights are based on "stock of property". After all, with tighter regulation and tight capital, high interest rates and high limits mean high risk, but investors should also be careful not to put money in one basket. On Wednesday, on the first four shopping days of Christmas, upscale stores were discounting heavily, including most of the fashion retailers. H&M offers discounts of up to 60%, while Debenhams, Fraser, French connections, gaps, new faces and Dorothy Perkins offer discounts of up to 50%.