The Chinese Telephone Code Plan is the way to group telephone numbers in the People's Republic of China. Land lines and mobile phones follow different systems: land lines use area codes, while mobile phones do not.
For land line area codes, a "0" is typically added in front when dialing domestic long distance from within mainland China, but is never added when dialing from outside mainland China. Domestic phone numbers in large cities have 8 digits, and in other areas 7 digits and no less. Mobile phone numbers have 11 digits.
The Special Administrative Regions of Hong Kong and Macau are not part of this numbering plan, and use the country codes 852 and 853, respectively. See Hong Kong telephone numbering plan and Macau telephone numbering plan.
