How to ask about chinese firstname?
What is your name /fullname/? - 你叫什麽名字？- 我叫李燕 /lastname + firstname/。
Whan is your surname? - 你貴姓？ - 我姓李。
What is your name /firstname/? - [Chinese version of this question? / Or does this question have no sense in Chinese?]
But there are still short names in Chine, as I know you can call your friend 李燕 like 燕燕. So may be question about your firstname still make sence.