xiǎo​yì​si

mere trifle

小意思 xiǎo​yì​si
mere trifle noun
something very easy to do or of little significance; a piece of cake

This kind of trifle is a piece of cake for him.

small token noun
a small gift or humble gesture given to show appreciation or respect

This is just a small token of my regard; please accept it.

Frequency

Movie subtitles
2.74 per million appears in 1% of films
Written text
1.49 per million

Sources

Definitions
CC-CEDICT