If you can't reach an agreement, go back at the end of the day when they are putting things away. You'll see that this is a very effective strategy, one that will get you a warm welcome. The early bird gets the good worm; the late bird gets the cheap worm. (Fang Hung-ming, USA / tr.
（Why do you like to buy the junk ?）若還擺不平，等收攤時，回馬一槍，可見奇效，皆大歡喜﹘﹘早來的鳥兒有好東西吃，晚來的鳥兒有便宜東西吃。