Why is the runway of Zhuhai Airport so long?

Safety considerations, weather conditions, etc.

Safety considerations: The longer the runway length, the higher the safety of the aircraft during take-off and landing. Long runways can provide more space for aircraft, accelerate and decelerate better, and reduce the risk when taking off.

Weather conditions: The weather conditions where Zhuhai Airport is located are complicated and often affected by typhoons and strong winds. Long runways can provide better operating space, making it easier for planes to take off and land in bad weather.