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Jin (mass)

language culture Maturity 11-13 Next article →

The jin, often called a catty, is a traditional unit of mass. It is used across East and Southeast Asia to weigh groceries. People use it every day to buy food at local markets. This unit helps people trade goods with ease. It is a very important part of daily life in many cultures.

Sam-ho-chhi
Sam-ho-chhi

There are many different ways the jin works. One jin can be divided into smaller pieces called taels. In modern China, one jin is divided into 10 taels. However, in other places, one jin might be divided into 16 taels. There are also much larger units you can use. A picul is a large unit equal to 100 catties. A gwan is another unit equal to 30 jin.

This system has a very long history in China. In ancient times, an official called the Sima managed military affairs. This official had to weigh grain and animal food. Because of this, the weight units were called sima units. People even used special tools called sima scales. These scales are still used in Hong Kong today. The weight of a jin has changed many times through history.

Different places use different amounts for one jin. In Japan, Korea, and Thailand, it is rounded to 600 grams. In Taiwan, the taijin is also 600 grams. The weight is slightly different in other areas. In Malaysia, one catty is 604.79 grams. In Singapore, the law says it is 604.8 grams. In Hong Kong, it is 604.78982 grams. In Vietnam, the jin is 604.5 grams.

In China, people use two different kinds of jin. They use the market jin for buying things. This market jin is exactly 500 grams. They also use the common jin for the kilogram. This helps people not get the two mixed up. The word catty actually comes from the Malay word kati. This word simply means "the weight." It is a useful tool that connects many different cultures.

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