Zhèngkè cháng yòng zhuǎnyí huàtí de zhàngyǎnfǎ lái táobì wèntí.
Politicians often use the tactic of changing the subject as a smokescreen to dodge questions.
Tips
usage
障眼法 literally means 'eye-blocking technique'. It is used figuratively for any tactic designed to distract or deceive, similar to 'smoke and mirrors' in English.