The selling steps are as follows: 1. Log in to ICBC mobile banking APP. 2. Click on the "Favorites" page in the bottom menu bar and select "Investment and Financial Management". 3. Click "foreign exchange trading", that is, operate "buy before selling" or "sell before buying".

Foreign exchange in a broad sense refers to the assets owned by the state that can be expressed in foreign currency, such as foreign bank deposits, government bonds and other forms of creditor's rights.