In Shuo Wen Jie Zi, Dai is interpreted as "Dai", which refers to the income obtained by distributing property. In ancient Chinese, "abnormality" is an abnormal baby. "Yi" and "Yi" are similar in form and meaning, so ancient books are often borrowed from each other. The Chinese character simplification scheme uses the combination of "differences" instead of "differences".
It is difficult to relate these explanations to the meaning of Chinese now. "Dai" is a combination of "ten", "one" and "different". Some people suggest that it can be understood as wearing a mask and holding a spear.
If we abandon the original meaning, we can explain the meaning of modern Chinese: verb: wear it on your head, on your body or on your heart. Words are composed of wearing flowers, Dai Xiao, hats, glasses, earrings, rings, making meritorious deeds, wearing clothes, not wearing clothes, wearing red and green, and loving pushing.
You must wear a mask if:
1, in public areas of crowded indoor places such as shopping malls, supermarkets, cinemas, venues, exhibition halls, airports, docks and hotels.
2. When taking a van elevator and public transportation such as airplanes, trains, ships, long-distance buses, subways and buses.
3, in squares, theaters, parks and other crowded outdoor places.