儿子跟我姓女儿跟我姓
[ér zi gēn wŏ xìng nǚ ér gēn wŏ xìng]
The meaning is literal – sons carry on the family name, and so do daughters. It emphasizes equal importance of both male and female descendants in carrying on the family lineage. In traditional Chinese culture, family names were usually passed down from father to son.