The videos recorded on an SD card are saved locally, there will be a risk of video loss due to damage and removal. In addition, SD cards have limited storage space.
If you purchase the Xiaomi Home Secure Service, the video will be saved in the cloud, not subject to storage space limitations, and videos that have been uploaded and saved to the cloud will not be lost due to damage to the SD card.
Note:
Even if the camera has no memory card, you can still buy and use the Xiaomi Home Secure Service.