To join Shopee Full Hosting, you need to follow the steps below:

1. Visit the official Shopee website and register an account. You can use the Shopee app on your computer or mobile phone to register.

2. After logging in to your Shopee account, click the "Seller Center" button in the upper right corner of the page.

3. On the Seller Center page, click the "I want to open a store" button.

4. On the store opening page, select the "Full Hosting" option and click the "Go to open a store" button.

5. Fill in the store-related information, including store name, store category, contact information, etc.

6. After submitting the application, you need to wait for Shopee's review. The review time may take some time, and the specific time will depend on your application.

7. After the review is passed, you will receive a notification from Shopee and you can start setting up products and operating the store.

Please note that certain conditions must be met to enter Shopee full hosting, including having a formal business license, product qualifications, etc. During the application process, you may also need to provide relevant documents and information for review.