Originally Posted by
hansyuwiwb
They don't have full content agreement with the international GDS. China has a closed domestic GDS which has access to certain China POS fares that are not published into foreign language channels.
Some other airlines (namely Air NZ in the western world) behaves in a very similar way.
AirNZ is hardly closed, anyone in the world can book the cheaper domestic fares on the .co.nz or grabaseat.co.nz website - provided know about it