Can be converted into a home version, the method is as follows:

1 and Office 365 only have home edition, personal edition and enterprise edition in Chinese mainland, but not education edition and university edition.

2. Subscription to Office 365 requires a Microsoft account, and an account can only have one active subscription at the same time. According to official documents, if you use the same Microsoft account to purchase or redeem multiple Office 365 subscriptions, you can extend the subscription time to a maximum of 5 years.

Please note that this will not increase the devices on which you can install Office, nor will it increase the online storage space available for subscription.