China is also the world's largest producer of raw cotton, cloth and cement. Beijing 10 Shanghai 21 Nantong 513 Shenyang 24 followed by the subscriber's number. Telephone facilities are good, although somewhat congested. It is possible to book calls to the major centres within China. Telex and telegram facilities are available in all the major cities.
Postal services are efficient.
Speedpost and domestic courier services are also available. The metric system is used. General Religions practised are Buddhism, Taoism, Islam and Christianity. Public buses, tourist coaches, mini-buses and taxis are available. Chauffeur-driven cars, small buses and car rentals are available.