How did 8090 traditional games spread all over the country?

At that time, everyone played games from one person to another, so people in one area knew about it through people's flow. Because when they were young, they had few recreational activities, so everyone would play them as soon as they were handed down, so the games played in the whole country were similar.

Very common. When I was a child, when games were not very popular, traditional games were really enjoyed by people all over the country. So all the small games in the country are unified.