Fire: 119

Emergency and Ambulance: 120

Police: 110

China Unicom Customer Hotline: 10010

China Mobile Customer Hotline: 10086

China Telecom Customer Hotline: 10000

Weather Forecast: 12121

Bus Inquiry: 2298216

EMS: 11183

SF Express: 95338

Post Code Inquiry: 11185

Youth psychological counseling service hotline: 12355

In towns and cities, IDD service is provided at all hotels and post offices. Phone cards are available in post offices inside hotels or in the streets. Even more conveniently, most newsstands in major cities also carry phone cards. Telephone booths in the streets are mostly for local calls.
How to make phone calls in China? 
When making international calls with landline or cell phone by yourself, first you must dial "00" ( international prefix ), then dial the country code, then the area code and local number.
When making domestic long distance calls with landline or cell phone ( to landline ) in China, you should first dial the area code starting with 0, then the local number. 
When making domestic long distance calls with landline or cell phone ( to cell phone ) in China, you first should dial 0, then the cell phone number. 
When calling a Chinese landline out China, you must first dial the international prefix number, for example in US you dial 011, then dial 86 the country code for China, then the area code and local number.
When calling a Chinese mobile number, you first need dial the international prefix number, then dial 86, then the mobile number.