Installing & Updating Chome Extensions in China

Given the crackdown on VPNs in China, I was wondering if there is a user-friendly way of allowing Chinese users to install and update Chrome web extensions?

Distributing the CRX of the extension for users to install manually, as others have suggested, is tolerable (though not ideal), but I would particularly like to avoid the requirement for users to re-install the extension whenever an update is available.

As far as I can tell from the docs, it is not possible to publish an extension in the Web Store with an "update_url" parameter in the manifest that doesn’t point to https://clients2.google.com/service/update2/crx. Is there any way of distributing an external Chrome extension to these users with a private "update_url"that will allow auto-updates?