It refers to the time from 19 to 2 1, also called dusk. Twelve o'clock was originally created by the ancients according to the natural laws such as the appearance and appearance of the sun, the change of the sky and their daily production activities and living habits.

The pulse time corresponds to 19:00~2 1:00, and qi and blood flow into the pericardial meridian to keep the pericardial meridian unobstructed and protect the heart.

The two most common diseases of modern people-cardiovascular and cerebrovascular diseases and psychological diseases-belong to the jurisdiction of pericardium meridian, so it is a preventive measure to beat pericardium meridian to make its qi and blood run vigorously enough.

Extended data

Time corresponding to other time:

Midnight, also known as midnight and midnight: the first hour of twelve o'clock. (23: 00 to 0 1 hour).

Ugly cock crow, also known as pheasant: the second hour of twelve o'clock. (0 1 to 03: 00).

Yin Shiping Dan, also known as Dawn, Dawn and Sundan, etc. Time is the alternation of day and night. (03 o'clock to 05 o'clock).

Sunrise in Shi Mao, also known as the beginning of the day, dawn and rising sun, refers to the time when the sun just appeared and Ran Ran first rose. (05: 00 to 07: 00)

When eating in the morning, it is also called breakfast. When the ancients ate in the morning, it was breakfast time (07:00 ~ 09:00).

Forty holes, also known as Yu Ri, etc. : near noon, call the corner. (09: 00 to 1 1: 00).

Noon noon, also known as the sun, noon, etc. : (1 1 to 13).

Sunset, also known as sunset, the center of the sun, etc. To the west of the sun is a sundial. (from 13 to 15).

The time of application, also known as day shop, dinner, etc. : (15: 00 to 17: 00).

As time goes by, it is also called sunset, sunset and evening: it means when the sun goes down. (from 17 to 19).

At this time, it was already late at night, and people stopped their activities and had a rest. Calm means quiet. (2 1 to 23: 00).

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People's Daily Online-twelve o'clock regimen: Sleep before midnight to nourish the gallbladder and have breakfast in the morning to nourish the stomach.