Where is Huawei mate30 Control Center and how to close it?

Huawei Mate 30 mobile phone control center cannot be closed. If you accidentally touch your mobile phone and open the control center, it is recommended that you back up the data in your mobile phone in advance (third-party applications such as QQ and WeChat need to be backed up separately) and upgrade the HarmonyOS system.

After upgrading the HarmonyOS system, we distinguish between the notification center and the control center. The notification center is pulled down at the top of the left side of the mobile phone, and the control center is pulled down at the right side.