To avoid the main topic; to change the subject to evade a question; to prevaricate.
当老板问起项目进度时，小张顾而言他，试图转移话题。
When the boss asked about the project's progress, Xiao Zhang changed the subject, trying to divert the conversation.
Next Idiom
To avoid the main topic; to change the subject to evade a question; to prevaricate.