The first square is round, and the so-called "first square" means that the upper part is square; "Full circle", that is, the lower part of the hairpin is round. Silver, copper, bamboo, wood and dentures before the Ming Dynasty. Most of them are cylindrical and hexagonal, but few are square, but the denture of Ming Dynasty is characterized by the first round foot.

L, first of all, cylindrical chopsticks are easy to roll, but the first round chopsticks, which are called four-stare chopsticks by the people, can't roll, so the banquet on the table is very stable.

4-sided chopsticks are more stable than round chopsticks. For example, eating tapped vegetables, holding square chopsticks in your hand is not easy to slip, and eating noodles is more convenient.

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Common sense of buying chopsticks

1. Don't buy chopsticks painted with colored paint, because heavy metal lead and organic solvent benzene in paint are carcinogenic, which will fall off with wear and tear and enter the human body with food.

2. Plastic chopsticks are brittle and easy to deform and melt after being heated, thus producing substances harmful to human body.

3, bone chopsticks have a good texture, but they are easy to change color and the price is relatively expensive.

4, silver, stainless steel and other metal chopsticks are too heavy, feel bad, and have strong thermal conductivity. Eating overheated food is easy to burn your mouth.