How do you name your father Liao and your mother Feng?

I think children usually take their father's surname, in this era of China. Most children take their father's surname, if you want to add both surnames.

You can call it Liao Zifeng, the second is Feng, the third is Min, the fourth is Liao, the fifth is Liao Fengjing, and so on.

I think it's easier for you two to choose a name. Sounds better, too. So I think ...

These names are still available for your reference. I hope my answer is helpful to you.