Push Notification Icon - Correct in Expo but Incorrect in Standalone App

Hi all,

When I’m testing push notification in Expo Client, the push notification icon exactly what I want it to be, as the picture marked in 2.
But after building standalone app and testing it, the push notification icon becomes to be 1, which is totally different from 2.

Could someone tell me why and how to make it be 2?

Thanks,
Ca