How to open the backend for Express Edition?

First of all, if we want to open the backend for our Financial Express Edition, we must first log in to the JD Express Edition app, click My Settings, and then open the backend, or click My Permissions to open the backend. That means when we use the JD Express Edition, we can say that we are buying goods in the backend, or in this case, our backend can continue to operate, so that it does not affect the use of our backend