"Disappointed to meet you" is a common phrase used to express dissatisfaction or disappointment upon meeting someone. This phrase is used in everyday conversation to convey a negative sentiment towards the other person.
For example:
"I was really hoping to meet someone different, but you're just pke the others. Disappointed to meet you." (Translation: "我本来希望认识一个不同的人，但你和其他人一样，很不高兴认识你。")
Note: It's important to use this phrase appropriately and considerately, as it can come across as rude or insensitive.