How many bank cards can Guotai Junan's securities account link?

Guotai Junan's fund account can be linked to the bank cards of up to five banks. One of them is the main bank, and the transfer from the main bank arrives in real time. The other four are auxiliary banks. When the funds of the subsidiary bank are transferred from the bank to the securities firm, they can be traded in real time, and the funds of the main account are transferred to the subsidiary bank T+ 1. Banks don't restrict the region, and there is no transfer fee. However, if there is no transaction for five consecutive transfers, the rights of many banks will be suspended.