Please tell me the flight arrangements and the stopover in airport in China.

actually we havent bought our tickets yet.
i was checking online for flights, and i saw the cheapest flights are with air china.. and that they all have stopovers in china..
is it possible to get a general answer?

Mr.khonsari,
Foreigners who have confirmed onward tickets and seats on international flights and directly transit through China and stay for no more than 24 hours within the airport boundaries shall not need to apply for a transit visa. Anyone desiring to go beyond the airport boundaries temporarily should obtain permission from the frontier inspection office.

Foreigners who are travelling on connected international flights with confirmed seats and transit through two or more cities in China by civil flights in no more than 24 hours shall not need to apply for a transit visa. However, permission from the frontier inspection office must be obtained.