Be kind. Today is not as good as the ancients. What does kindness mean?

According to the records of ancient books, we often think that the ancients were quite tall. For example, Guan Yu and Zhang Fei in Romance of the Three Kingdoms are generally over 8 feet, while Lu Bu is 1 foot. If 8 feet is the height of an ordinary person at that time, it must be said that they are all "giants". But the researchers said that there was no uniform and accurate scale in ancient times, and it was first measured by silk and ponytail. Later, I did it myself. In the Zhou Dynasty, a relatively unified "envy scale" was made of jade. But that foot is only 19.7 cm long today. According to this calculation, the so-called "8-foot man" is only 157.6 cm tall. Today, this belongs to dwarfs. The length of the ancient ruler is changing. The rulers of the Han dynasty were longer than those of the Zhou dynasty; The rulers of the Tang Dynasty are longer than those of the Han Dynasty. The rulers of the Qing dynasty were longer than those of the Tang dynasty; Today's 1 ruler is 33.33 cm long, which is more than 1 cm longer than the ruler in Qing Dynasty. All these tell us that the ancients were not taller than today. Judging from the unearthed bodies, it also proves that the ancients were not taller than today. The length of female corpse of Han Dynasty unearthed in Mawangdui, Changsha 145 cm. Male corpse of Han tomb in Fenghuangshan166.7cm; The Tang Dynasty corpse found in Turpan, Xinjiang, male 169 cm, female 155 cm. There were also differences in the height of the ancients, but overall, from the average figure, the ancients were not taller than today. At present, the average height of young people in China has reached 170.3 cm, much higher than the "eight-foot man" in the Zhou Dynasty.