It's a piece of cake: it means a metaphor for a trivial thing, or a small thing that can be easily dealt with at any time.

Pronunciation: xi m: o cà i y: di é

Part of speech: usually used as an attribute in a sentence to modify the subject or object.

For example, perennial plants are much easier to grow than annual plants. After rooting them, weeds don't need to be removed, and watering them is just a piece of cake.

Synonym introduction: insignificant

Pronunciation: wēi bù zú dào

Express meaning: it means that the meaning and value are too small to be mentioned.

Part of speech: formal; As predicate and object; Used of people or things.

Citation: Sun Li's Xiuluji Literature and the Road to Life: "I don't think so highly of my works, I think my works are insignificant."

Example: One day, I wanted to go to the library on a whim. Unfortunately, when I was waiting for the bus, it was caught in a heavy rain. Just when I was complaining, he handed me an umbrella by chance. Although it was only a trivial matter, it still made me unforgettable!