It's tough
Chi Nu CE Jian, a Chinese idiom, Pinyin is bi ā NN ú C è Ji ǎ n, which means that I am low in ability, but I am hard-working under strict supervision. Used as a modest word. It comes from the compilation of a book into a CI en Ming Shu.
Idiom usage
Used as a predicate; used in modesty
The origin of Idioms
Zhang Juzheng of the Ming Dynasty wrote a book called CI en Ming Shu: "in the fifth year of Gai's reign, now I've been conquering it. I'm willing to work hard."
It's tough
Make a chisel by measuring a peg - liàng ruì zhì záo
gigantic and remarkably great in stature - kuí wǔ qí wěi
limited knowledge or experience - chán bù zhī xuě