It is easy to shot just 6m. It is also surprising that the acceptance is one difference even if I remove the "ryannmen". ‪手拍子で打6mにしてしまう。リャンメンを外しても受け入れが一枚差というのも驚く。‬

I also chose to have a shot 4p. I don't notice that there is a 9p in the acceptance if I shot 5m. answer is shot 5m.