Note: I was not familiar with BTS Travel until tonight and cannot vouch for this as a good company – but they did have some great posted rates to China, and these excellent general discount travel tips:
SATURDAY NIGHT STAY
Try including Saturday night during your stay at the destination.
We sell heavily discounted tickets only. Our seat inventory is very limited on each aircraft. The earlier you book the more chance you have to get the cheapest possible seat.
AVOID WEEKEND TRAVEL
Traveling Monday thru Thursday is generally cheaper than Friday thru Sunday. This applies to departure and return travel. Airlines charge up to $80 more for weekend travel.
THE CHEAPEST ONE WAY FARES
We offer substantially cheaper one way fares than many other major websites. Our one way fare are typically up to 50 percent cheaper than round trip fares.
EXTENDED AIRPORT SEARCH
Our search engine automatically searches for lowest fares using multiple airports within large metropolitan areas. This method is guaranteed to find you the lowest possible fare if you are flexible with the airports.