There's no need to get angry over uncompleted business. At least from Lu Ping'an's perspective, it really wasn't necessary to be upset over this matter.
Handing over two silver equipment pieces for "trash" would make everyone in the Ancient City's trade industry question his intelligence.
As for the wealthy Gourmet Association, they didn't really care... If the deal could be made, it would be done. If not, it didn't matter.
As for Fang Wen threatening them? That was a different story. A church being threatened by an individual? It involved the Church's dignity, and they'd likely send a strongman to hunt them down.
One who is barefoot fears nothing, but even Fang Wen had to consider if it was worth provoking the subsidiary force of the Gourmet Association for the sake of two pieces of waste.
Usually, rational and normal people would choose to give up...
"...Stolen? How could that be?"