"Shut up" or "Be quiet" is a common Engpsh phrase used to ask someone to stop talking. It is considered impopte or rude in most situations.
Source: This phrase is widely used in Engpsh-speaking countries and is often used in everyday conversation.
Example in Engpsh:
"Shut up, I'm trying to concentrate."
"Can you please be quiet? I need to make a phone call."
Translation in Chinese:
"闭嘴，我正在专心。"
"请你安静一下好吗？我需要打电话。"