Because cotton trousers cover autumn trousers, there must be a reason "it is the peddling of the old Tianjin Wei people." In the cold winter, it is nothing new for people who work hard outside to wear cotton trousers. But if you wear cotton trousers and then long trousers, it's a bit counterintuitive. So there must be a reason for the next sentence: cotton trousers and autumn trousers.

The old lady wears cotton trousers one by one. Two-part allegorical saying is a special language form created by working people of Han nationality in China in their daily life.