小儿科 (xiǎo’érkē) something not worth considering; something extremely easy
Usage:
“小儿科”主要有两种意思：一是比喻价值小、水平低，不值得重视的事情；一是比喻极其容易做的事情，类似于“小菜一碟”。
“小儿科”has two main meanings: one refers to things of small value, low level, and unworthy of consideration. The other refers to things that are extremely easy, as in “a piece of cake.”
Sentences:
1、Duìtā láishuō, huāgè jǐqiānkuài qián chīdùnfàn búguò shì xiǎo’érkē bàle.
对他来说，花个几千块钱吃顿饭不过是小儿科罢了。
对他来说，花个几千块钱吃顿饭不过是小儿科罢了。
For him, spending a few thousand dollars for dinner is too miniscule for consideration.
2、Qīmò kǎoshì yòng zhèzhǒng shìjuàn, duìyú jiānzishēng láishuō jiǎnzhí shìxiǎo’érkē.
期末考试用这种试卷，对于尖子生来说简直是小儿科。
期末考试用这种试卷，对于尖子生来说简直是小儿科。
Using this paper for the final exam is a piece of cake for the top students.
