“七尺男儿”有多高？

Q: In Chinese, we often say “堂堂七尺男儿”. How tall is a 7-chi-tall man?

A：Chi is a unit (单位) of length. Today, 1 chi is around 33.3 cm. But does this mean that a 7-chi-tall man is 233 cm tall? Not really. Chi’s length has changed over time.