Hanzo Hattori talked with the protagonist about the time to set off, and suddenly took out a cat from his arms, glanced at the cat's eyes and continued to put it in his arms. Then I said, "We have no time, leave quickly."

and Hanhan who was being masturbated said,

At first I thought this was a game to reflect that "Hanzo Hattori is a cat control."

Success After searching online, it turned out that the ancient Japanese ninjas actually determined the time by looking at the shape of the cat's pupils!

For this purpose, I have also drawn a special data correspondence table↓

, and in our country, there have been records of using cat pupils to distinguish the time.

For example, Su Dongpo mentioned in "Reflections on the Characteristics": The line between Zi and Wu is round, the line between Mao and You is round, Yin and Shen are like Ginkgo, and Chen, Xu, Chou and Wei are like money.

The Qing Dynasty Tanci "Jade Dragonfly" also records: a ray of light in Zi, Wu, Mao and You, and a jujube like Chen, Xu, Chou, Wei and Ju. Yin, Shen, Si and Hai are like mirrors, and there is time in the cat's eyes.

This sentence is about the heroine, nun Zhizhen, giving birth in a nun in the nun. Because she couldn't watch the sun to recognize time at night, she caught a cat to judge the time of the child's birth.

Even in Gubocha's "Changing the Chinese Empire", there was also an interesting record of the ancient Chinese people watching the time with cat eyes:

When Gubocha came to China for a trip, he met a young man a year-old near the farm. He asked by the way: "Is it noon?"

The young man raised his legs and ran home, hugged a cat and said, "Look, it's not noon!"

Note: "Changing the Chinese Empire" is a travel note written by a foreign missionary Gubocha while traveling to the Qing Empire. There is a saying that goes: the wisdom of our ancestors is infinite. In ancient times, ancestors had discovered that cats' pupils would change in size according to the strength of external light.

For example, at noon, when the light is very strong, the pupils will shrink and become a vertical line; when the light is weak at night, the pupils will become larger, becoming oval and round to varying degrees. This conclusion has also been verified in our modern research. The pupil changes in cats are indeed related to the amount of light entering.

The contraction of the sphincter of the pupil on the iris can shrink the pupil, while the contraction of the pupil's open muscle can diffuse the pupil, making the pupil "flexible and stretch".

This allows the cat to clearly see what is in front of him, whether during the day or at night. The back and forth changes in the shape of the pupils are what his ancestors said, "like a date, like a line, like a moon."

However, the calculation time is not accurate, and it can only be judged for about an hour, not to mention some "interference factors". For example, as long as the cat is excited or excited, the pupils will dilate, and the sun will not be strong on rainy days, etc.

But for the ancestors who farm in the field, it is enough to see the cat's pupils to know about the approximate time.

The "Diet Instructions" by Jia Ming, a health preserver in the Yuan Dynasty, clearly records the method of the ancestors calculating the time when they look at the cat's pupils: their eyes can determine the time, Zi, Wu, Mao and You are like a line, Yin, Shen, Si, Hai are like a full moon, Chen, Xu, Chou, Wei are like a date pit.

The vernacular text is: The pupils of the cat in the four hours of Zi, Wu, Mao and You are like a line, the pupils of the cat in the four hours of Yin, Shen, Si and Hai are as round as the moon, and the pupils of the cat in the four hours of Chen, Xu, Chou and Wei are in the shape of a date pit.

Although domestic cats are now indoors, the influence of sunlight has weakened, cats don’t have to keep their pupils open.

But this habit is still there. You can go home and see your cats and stare at their pupils like ninjas. After all, it is still cool to use a cat as a pocket watch.

The time to write this article is at 8:40 pm, which belongs to the hour of Xu. In order to verify the wisdom of my ancestors, I took action against the sleeping kitten beside me...

"Chen, Xu, Chou, Wei, are like date pits" - That's right! It's in the shape of a date pit!

When did you read this article? Don't look at the watch first, open the cat's eyes and guess~