A certain year and a certain month
Su Yue: "What am I to you?"
Chen Hongyu: "... Youlemei?"
Su Yue (rolling eyes): "Vulgar!"
On a certain day of a certain year and a certain month
Chen Hongyu: "What am I to you?"
Su Yue: "... Youlemei?"
Chen Hongyu (with a cold face): "Oh, woman."