China Merchants Bank and Bank of East Asia have through-train services for Hong Kong stocks. Open an account at the bank, and then go to four securities firms including Shenyin Wanguo and China Merchants Securities to apply for a Hong Kong stock account. After the account is completed, you can purchase Hong Kong stock convertible bonds. At present, China Zhengxin Group's Hong Kong Bond Connect business is relatively safe, which bundles asset companies to buy back the purchased Hong Kong bonds and other risk control measures. It is relatively safer. After all, state-owned enterprises can buy back, and the liquidation is easier than liquidating on their own. However, there are limitations. The peculiarity is that after opening an account, it only repurchases and guarantees Hong Kong bonds issued by Zhengxin Group's own participating Hong Kong companies, and the product selection is not high.