A kilo, also called 28, is 16 Liang, the number of ancient weights.

Modern "Jin" has the following conversion with metric system according to local usage habits:

Chinese mainland 1 kg is 500 grams (g).

Hong Kong Macau 1 kg is about 605(g).

Taiwan Province 1 kg is equal to 600g.

At present, Hong Kong law stipulates that one kilogram is equal to one hundredth of a load or sixteen taels, that is, 604.82 grams (g).

Taiwan Province market commonly used Taiwan system: 1 Taiwan Jin = 600g. However, Jinmen and Mazu are adjacent to Fujian Province, so they don't use Taiwan Jin. The so-called "Jin" is 1 Jin = 500 grams.

The current system of 121 Jin (500 grams, 0.5 kilograms) began in the late 1950s and was initiated by Mr. Jiang Zhouyuan, a native of Wenzhou at that time. After the proposal of 121 Jin was put forward, it quickly gained the attention of the Central Administration for Industry and Commerce.

1958, the central administration for industry and commerce began to implement a comprehensive reform of weighing instruments and measurement in the whole country on the basis of pilot projects in many places across the country, and 12 scales were widely used.

Afterwards, the Central Government Council also awarded Jiang Zhouyuan the certificate of "China Weighing Instrument Reform Advisor". Jiang Zhouyuan, the pioneer of weighing instrument reform with historical and practical significance, is deeply loved by people.