Can I wash my hair today? What's your opinion?

You can't wash your hair, because washing your hair on this day will wash away your fortune and blessings. At the same time, because the first day to the third day is the birthday of the water god, you can't touch the water and pour water, otherwise it is disrespectful to the water god. Therefore, you can't wash your hair on the third day of the New Year, but you can wash your hair casually after the third day.

Other taboos on the third day of the New Year:

Don't break anything.

Don't break anything next year. If there is, say "broken (years old) and broken (years old)." This is to remind people not to get carried away in the new year, but also to be cautious and lucky.

Speak well and avoid scolding children.

No swearing. In some areas, if a child makes a mistake, adults will immediately say, "everything is forgiven if the child says so."

Chikuri

Also known as "Red Dog Day", it is an unlucky day to avoid paying New Year greetings. Red dogs are arrogant, and there will be evil things when they meet. Therefore, people usually stay at home on this day to avoid meeting murderers, so it is not appropriate to go out to pay New Year greetings, whether it is relatives' or friends' homes.