Flights from China to Japan have been affected amid increasingly angry protests over a territorial dispute between the two countries.
All Nippon Airways reported a rise in cancellations on Japan-bound flights from China.
Some Japanese companies have also temporarily shut factories and shops in China while Chinese state media warned on Monday that Japan could suffer another "lost decade" if trade ties sour.
The dispute follows Japan's decision last week to buy disputed East China Sea islands, which Tokyo calls the Senkaku and Beijing calls the Diaoyu, from a private Japanese owner.
Gravity always wins!
Interesting topic, I wondered just what it looks like in practice. Chinese and Japan must have probably sharpened controls when it comes to their airport.