1. Open Xuexin.com official website, then log in, log in to our personal account, and then enter the Xue Xin file page.
2. After entering, find the personal center-account in the upper right corner of the learning letter file page and enter the account information page.
3. Find the secure mailbox function in the account information, and you can see the first three digits of the mailbox and the mailbox suffix.
Ability-centered Chinese quality is a combination of many factors. It is not only a tool for students to learn other courses well, but also below.
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