Three rules of SMS reply

Because the Shanghai Stock Exchange is limited to three accounts.

Shareholders' accounts are divided into Shanghai accounts and Shenzhen accounts, while the number of accounts in Shanghai Stock Exchange is limited to three. Therefore, in order to open a new account with three Shanghai accounts, it is necessary to cancel one Shanghai account. The Shenzhen Stock Exchange does not require this, so Ping An Securities can open a new account, but can only buy shares listed on the Shenzhen Stock Exchange.