在北京，新旧市集共同存在。本篇聚焦两者的对比与变化，记录来自新兴市集和沙河大集的三位摊主。通过他们的日常、与顾客的对话以及对工作的思考，展现贩卖食物这件事上，不同市场展现的两种不同的城市生活节奏。

In Beijing, old and new markets coexist. This article focuses on the contrast and changes between the two, and records three stall owners from Xinxing Market and Shahe Market. Through their daily lives, conversations with customers, and reflections on their work, they show the two different rhythms of urban life in different markets when it comes to selling food.