Correct

六十四开

/ liù shí sì kāi / 
Strokes

Example

As a Noun

sixty-four mo; 64 mo

1
Liùshísì
六十四
kāi
开
zhǐ
纸

64 mo paper; paper in 64 mo

2
Liùshísì
六十四
kāi
开
běn
本

sixty-four mo