What old things in the past have become new things now?

Many old objects are no longer common in modern society, but they have played an important role in the long river of history. The following are the changes of some old objects in modern society:

1. Cool bed: I moved to the yard to sleep in summer, and the whole bed was made of bamboo. The tenon and mortise technology is the same as the mat, and the bed surface is made of bamboo. The legs and sides of the bed are made of whole bamboo, and the four corners of the legs are reinforced with iron wires. Now the furniture market is rare.

2. Wine gourd: after the gourd is dried, take out the seeds, wash them, put them into the mold pressed by the machine, dry them, and soak them in white wine. Some wineries are still in use.

3. Door curtain: In the past, there was a tradition of making door curtains in the north and south, and the material was grass beads. In Shanxi, rosewood is widely used, and peach stones are mostly used in northwest China. Nowadays, due to the rising price of materials and the pursuit of fashion, the use of door curtains is not common.

4. Pastry molds: prevailing in the south, southern pastry chefs who make white cases have developed molds with various patterns for the good-looking and special features of cakes. Nowadays, due to the popularization of mechanization, this process of making cakes by hand is not common.

5. Old keys and locks: In Tibet, old keys and locks represent auspiciousness and protection. Nowadays, due to the improvement of social security and the progress of technology, ordinary families no longer need to use locks and keys.

These are the changes of some old things in modern society. Although these old objects have gradually disappeared or been replaced by modern products, the historical and cultural values they represent are irreplaceable.