1. Open the octopus input method: first, open the octopus input method on your mobile phone or computer.

2. Register an account: If you haven't registered an account yet, you need to register an account to record your gold coins and exchange records. You can register with your mobile phone number or WeChat quick login.

3. Enter the Gold Coin Mall: In the octopus input method, click the "Gold Coin Mall" button in the lower left corner to enter the Gold Coin Mall page.

4. Open the gold coin mode: On the page of Gold Coin Mall, click the "Gold Coin Mode" button in the upper right corner to open the gold coin mode.