For example, they would go and collect from rice farmers at the twice-yearly rice harvests, from pig farmers at the time of slaughter, from factory workers at the beginning of the month right after payday, and from poor families once a year.
例如農戶一年收割兩期稻作，所以稻作收成時就往農家跑，養豬的當然要趁賣豬時收錢，有些家庭子女在工廠上班，那就月頭領薪水的時候結算，較窮困的家庭，甚至一年才結算一次。