Feng Qingxue had heard a story about Dacron fabric. She couldn't tell if it was true or not, and the storyteller probably added some humorous touches to it.
There was a young man who queued up to buy Dacron fabric. After much effort, it was finally his turn, but there was only a small piece left—just enough to make a pair of briefs. He gritted his teeth and bought it, stitching himself a pair of briefs to wear underneath. To show off that he owned Dacron fabric—since wearing it was considered a status symbol at the time—he crafted a sign to wear around his waist that read, "Contains Dacron fabric inside."
The story could have ended there, but that was just the beginning.