Power on and off timer
Use the power on and off timer to reduce power consumption and prevent disturbances when you’re asleep.
Open 
Settings, touch Smart assistance > Scheduled power on/off. Switch on Scheduled power off and Scheduled power on, and then configure the power on and off time and repeat settings. Your device will automatically turn on or off at the preset time.
To disable the timer, switch off Scheduled power off and Scheduled power on.
Questions about your Huawei Mate 10? Post in the comments!
Huawei Mate 10 Manual [PDF]