Air China has no commercial flights to Tonga so it has to take a circuitous route covering a total of21,100 kilometres over nine countries, according to airline spokesman Wang Yongsheng.

• 中国航空公司发言人王永生说，由于中国国航没有飞往汤加的商务航班，所以飞机不得不采取迂回路线，穿越9个国家，全程达21,000公里。