There are a few different types of Chinese phone numbers. Below is a list of the most common ones and what they represent: 

Area Code: This represents a geographic region in China. For example, the area code for Beijing is 110. Sometimes there are two area codes for a city, for example Beijing has the 110 and 140 area codes. 

Prefix: This represents a branch or department within an organization. For example, the prefix for the Beijing police department would be 100. 

Postfix: This represents a location within an organization. For example, the postfix for the Beijing police department would be 000. You may Check this link if you get more information about Chinese phone numbers.

National Number: This is the standard Chinese phone number and is always 8 digits long. It can be traced back to 1978 when the country switched to a national numbering plan. 

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Using Your Chinese Phone Number Around The World

If you have a Chinese phone number, you can use it around the world. China has been a leading global telecommunication and Internet powerhouse for many years now, so using your Chinese phone number is not as difficult as it might seem. Here are some tips on how to use your Chinese phone number around the world: 

-When calling a Chinese phone number from outside of China, just dial the international access code 00 (the UK's code is 01) followed by the country code (86 or 99 for China), then the local area code (9 or 12 for mainland China). 

-When making an international call from within China, just dial the international access code 00 followed by the country code (86 or 99 for China), then the local area code (9 or 12 for mainland China).