Yes, you can choose large-scale comprehensive securities firms nationwide, especially those with branches or subsidiaries and agencies in Hong Kong, such as Shen Yin Wanguo and Guotai Junan, all of which have securities business in Hong Kong and have been listed on the Hong Kong Stock Exchange.

H shares, also known as state-owned shares, refer to foreign shares registered in the mainland and listed in Hong Kong. (Because of the initials of Hong Kong -Hong Kong, it is called H shares. H-shares are physical shares, and the "T+0" delivery system is implemented, with no price limit. Institutional investors in China can invest in H shares, while individuals in Chinese mainland cannot directly invest in H shares at present. In Tianjin, individual investors can set up a "through train service for Hong Kong stocks" in the branch of Bank of China to directly invest in H shares. However, the State Council has not yet opened the floodgates for this business. It will take time for individuals to directly invest in H shares. International capital investors can invest in H shares.