What kind of jokes did tea and tea lead?

During the Eastern Jin Dynasty, drinking tea has become a custom in the Third Five-Year Plan area and Jiankang, but it is not very common in the Central Plains. A story is recorded in Shi Shuo Xin Yu: At that time, there was a gifted scholar named Ren Yuchang in the Central Plains. When he swam to Jiankang with Jin Shinan, some locals entertained him with tea. Ren Yuchang, who has been living in the Central Plains, is not very familiar with tea and asks, "Is this tea or tea?" Jiangdong people secretly wonder: "This person doesn't know whether tea is tea?" Ren Yuchang saw the color of doubt on everyone's face and consciously let slip. He quickly covered up and said, "I asked, is it hot or cold?" Who knows that this explanation did not hide his embarrassment, but caused people to burst into laughter.

From Baidu