Do you know the six old objects left by the people, except Figure 1, which can be named?

This is a "clock". If we look at the old clock from the collection point of view, we can find that it is actually a perfect combination of art and practicality, especially those products with a long history, excellent technology and excellent materials, and their collection and investment value are not inferior. Do you know the six old objects left by the people, except Figure 1, which can be named?

Do you know what this old object in the picture is? In the 1960s, it was a high-tech machine, which could only be used by commune staff.

Pulleys in the exhibition hall.

Of course there is this picture. I have posted this picture in the headline several times, but the answer is different every time. What do you think this is? Is it an axle or something?

This is grandpa's favorite. He kept it for a long time. Can you name it?

In the end, people in the city don't need it, only the countryside needs it. Do these friends know each other?