Hong Kong stocks refer to stocks listed on the Hong Kong Stock Exchange. Hong Kong's stock market is more mature and rational than China's and more sensitive to the world market. If some domestic stocks are listed in China Mainland and Hong Kong at the same time, forming an "A+H" model, we can judge the trend of A shares according to their situation in the Hong Kong stock market.

A shares, that is, RMB ordinary shares, are ordinary shares issued by companies in China for domestic institutions, organizations or individuals (from April 20 13, 1, domestic, Hong Kong, Macao and Taiwan residents can open A-share accounts) to subscribe and trade in RMB.

A shares are not physical shares. Electronic recording, paperless, implementation of "T+ 1" delivery system, price limit (10%). The participating investors are Chinese mainland institutions or individuals. The stocks of listed companies in China are divided into A shares, B shares, H shares, N shares and S shares, mainly depending on the listing location and investors. Trading in China A-share market started on April 8, 20 1990 and 20 15, and A-shares returned to the 4000-point mark after seven years.