What is the disturbing reminder of China Mobile?

This is a warm reminder service provided by mobile companies in various regions according to the user's mobile phone number. Just like a new mobile phone in a region, you will receive short messages from China Unicom and mobile companies. Welcome here. This is also a short message in the form of weather forecast, but there is no charge for receiving this short message, just telling users the local weather, customs and so on. Although disturbing the people, it is sometimes useful.