What things have you encountered that make you laugh and cry?

I sat reading for two hours today, and my neck is sore and sore. ?

I have been doing experiments in the laboratory today, and my whole back is sore. ?

Today, I used a trolley to transport goods, and my spine was particularly uncomfortable this afternoon. ?

I don't know when it started. Many things in life seem to be aimed at tall people. The desk is very low, so you can only lift your head very low when reading; The table in the laboratory is so low that you can only stick your head in it when doing experiments; The handlebar of the stroller is very short, so you can only pull the car sideways.

There are countless similar examples, and the vast number of tall men and women are also quite worried about this. ? Is it our fault that we are tall? This is not your roof beam. ? Having said that, it still doesn't change the status quo.

In fact, since ancient times, the height of China people has not changed significantly. According to historical research, the average height of adult males in ancient China was between 1.65- 1.67, while the average height of adult females in ancient was between 1.54- 1.56. Except for obvious differences in individual periods, the average height of adults is within this range in most periods.

Of course, when many people read history books or related novels and masterpieces, they often find that many people are introduced to their height as soon as they appear, which is more than seven feet and more than eight feet. So why is it that the average height of ancient adults is so low through textual research?

First of all, ancient weights and measures are different from modern ones. Seven feet in ancient times was equivalent to about 1.74 meters today, and eight feet was equivalent to about 1.86 today. Because the weights and measures of each era are different, it is impossible to give a particularly accurate data in a unified way, and we can only roughly evaluate the scope.

Secondly, everyone who can be recorded in the history books did something at that time, whether it was good or bad. Therefore, anyone who can leave a mark on the history books must not be a relatively ordinary person. Therefore, it is normal for an extraordinary person to have an extraordinary height. Moreover, these people are only a small part compared with all sentient beings, and it is difficult to improve their average height.