How many alternate airports are there in Beijing?

There are two alternate airports in Beijing. They are Tianjin and Hohhot. The site selection requirements of the alternate airport are as follows. When the plane approaches the airport, it must ensure that the weather conditions at the airport are equal to or higher than the minimum weather standards for alternate airports stipulated by the state. If the weather at the destination airport and the destination alternate airport is on the edge of landing conditions, at least one destination alternate airport should be designated.

1, alternate seats need to be reserved at alternate airports in proportion.

2. When choosing an alternate field, the aircraft also needs to fly to the alternate field with fuel. The more fuel you carry, the greater the aircraft load.