Zwift has an API that third party developers can request access to. There is a form linked to the comment below. You could share this with Huawei if you want them to work on it.
Nothing has been said publicly about an integration with Huawei Health, but that’s normal. Most likely nothing will be said unless it happens.
It looks like there is a Huawei Health integration with Strava, but only available in certain regions. I don’t know what that integration actually does or if it can sync a Zwift activity from Strava to Huawei Health.
https://support.strava.com/hc/en-us/articles/15593563184781-Huawei-Health-and-Strava