Meaning:

唱反调 (chàngfǎndiào) to speak or act contrary to

Usage:

“唱反调”是指提出相反的主张，采取相反的行动。

“唱反调” is when someone takes the contrary opinion or performs an opposing action.

Examples:

1. 由于有人唱反调，调查工作受到了阻碍。

    Yóuyú yǒurén chàngfǎndiào, diàochá gōngzuò shòudào le zǔ’ài.

    Because someone made opposing actions, the investigation has been hampered.

2. 青春期的孩子喜欢和父母唱反调。

    Qīngchūnqī de háizi xǐhuān hé fùmǔ chàngfǎndiào.

    Adolescent children like to talk back to their parents.