The ancients divided a day and night into 100 parts, and each part was an instant. Since a day and night is 96 minutes, a quarter of an hour is equivalent to how many minutes now.

According to an encyclopedia calculation (the origin of Shang and Zhou Dynasties), a moment is equivalent to today's 14.4 minutes. After the Ming and Qing Dynasties, the reform of 96 engraving system was established as a formal system in the early Qing Dynasty. Just like the moment now is 15 minutes.

In ancient China, every day (day and night) was twenty-four hours, while in ancient times it was twelve hours. In ancient times, time was not counted by one, two, three or four, but marked by ugly children, and replaced by animals such as rats, cows, tigers and rabbits to facilitate memory.

The specific division of labor is as follows:

It's from eleven o'clock to one o'clock at noon, and twelve o'clock is the punctuality; Ugly (cattle) from one to three, with two points as the punctuality; Yin (tiger) is from three o'clock to five o'clock, with four o'clock as the punctuality; Hair (rabbit) from five to seven, with six.

The point is punctuality; Chen (Dragon) is from 7: 00 to 9: 00, with 8: 00 as the punctuality; It's 9 o'clock to 1 1, and 10 is the punctuality; At noon (horse), it is eleven o'clock to one o'clock, with twelve o'clock as the punctuality; Not (a sheep) but a.

From three o'clock to three o'clock, with two points as the punctuality; When applying for (monkey), it is from three o'clock to five o'clock, with four o'clock as the punctuality; You (chicken) are from five to seven, with six o'clock as the punctuality; From 7: 00 to 9: 00, 8: 00 is the punctuality; Hay (name)

It's 9: 00 to 1 1, and 10 is the punctuality.

In ancient times, in addition to using standard watches and sundials, time was also measured by lack of time. This timing method divides a day and night into one hundred minutes (one minute is equivalent to today's 14.4 minutes). The "leakage" in the "missing carving" refers to the leaky pot; "Carving" means carving a sword. Water leakage is something more useful than a sundial.

Timer, which can be used for timing and punctuality, is not limited by night and weather changes.

Hundred minutes. That is to say, day and night are divided into a balanced one hundred quarters. Its production is related to the use of missing prints. May have originated in Shang Dynasty. In the Han Dynasty, it was changed to 120, and in the Southern Dynasty, it was changed to 96, 108. After many twists and turns, it was not until the introduction of European astronomy knowledge in the late Ming Dynasty that the reform of 96 engraving books was put forward and made it a formal system in the early Qing Dynasty.