How to adjust the exposure when Xiaomi takes pictures with his mobile phone?

Here, take Xiaomi 5X mobile phone as an example, and the specific methods are as follows:

First, click the "camera" icon on the desktop of Xiaomi 5X mobile phone, as shown in the figure below.

2. After entering the camera interface, open "Mode Selection" to enter, as shown in the figure.

3. After entering the mode selection interface, select the "Manual" mode and light it.

4. Then click the up and down keys of the symbols in the red box below to adjust the exposure of the camera, as shown in the figure.