Two weeks ago, when I was minding my own business in the market, I saw something very special, rarely seen in the US.So, I captured it as evidence.What is it?

• 两星期前,当我在市场做自己的事时,我看到有件事在美国是很特别又少见的,因此,我拍下它当做证据,到底是什麽呢?