In addition to a new security patch, the update does not bring any new features to Enjoy 20 Plus 5G. It is rolling out in China with EMUI version 10.1.1.166.  Device: Huawei Enjoy 20 Plus 5G Version: EMUI 10.1.1.166 Region: China Changelog:

Integrated Android security patches released in December 2020 for improved system security.

To download the latest update for your Huawei Enjoy 20 Plus 5G, head to Settings > System > Software update > Check for Updates, then tap on Download and install. Another method to check for the latest update is through the Support app. For this, navigate to Support app> Services>Update> Check for Updates.  [via]

Huawei Enjoy 20 Plus 5G getting EMUI 10 1 based December 2020 security patch update - 99