Goldfish Catcher Game no2 " a Poi"

A goldfish catcher game has been introduced in the previous note. 

Additional information forcing on Poi shows this time. 

A poi has different types. The difference is the thickness of paper. 

Concretely saying, there are 4 gou-poi, 5 gou-poi, 6 gou-poi and 
7 gou-poi. 4 gou-poi's paper is the thickest while 7 gou-poi is the thinnest. As you can imagine, the poi which made of thin paper such as 7 gou-poi can easily break. 

For the reason, game shoppers give 4 gou-poi or 5 gou-poi to kids and girls. Because they are considered as not good players. On the other hand, shoppers secretly gives 7 gou-poi or 6 gou-poi to boys and people who look like good players. 

It might be good idea that a girl takes a poi and pass it to a boy to let him play if the couple try the goldfish catcher game.