1. First, open Didi on your Huawei mobile phone, and click the villain icon at the top left, as shown in the figure below.
2. Then click "Security" in the opened page, as shown in the figure below.
3. Then, in the page that opens, find and select "Emergency Contact", as shown in the figure below.
4. Finally, in the page that opens, enter the contact number, and then click "Confirm Add". As shown in the figure below, complete.