Techniques for shooting starry sky
First, you need a Huawei p30 pro and a tripod.
Then, you should turn on the Huawei camera professional mode, adjust the iso to 800 to 1000, exposure for 25 seconds to 30 seconds, AF auto focus.
Again, if there is a light source around, you can introduce a little bit, not too much.
Finally, fix the phone with a tripod. Press the shutter and wait.
BTW, I have used this shooting setting in New Zealand, and it is foolproof. You can copy with confidence.