It was the short haul that needed work.
The so-called " long-and-short-haul clause," which forbade a greater charge for a long than for a short haul over the same line, if circumstances were substantially similar, was also robbed of all its vitality by court decision.
The law forbids a railway or any other common carrier to charge more for a short haul than for a long haul over the same line, unless, in special cases, it is authorized to do so by the Commission.
The Trident was CAAC's first western built short haul jet airliner.
They also note that the bag's capacity can allow it to be more than just a short-haul bag, if you pack carefully.