重頭戲

Simplified: 重头戏

zhòngtóuxì ㄓㄨㄥˋ ㄊㄡˊ ㄒㄧˋ

    • opera (or role) involving much singing and action
    • highlight

      fig.

    • main feature
    • major activity

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
a heavy-weight play
Meaning
The most important and demanding part of a task or event; the main event.

Sources