少年他未成年莫诱惑少女她未成年莫调戏
[shăo nián tā wèi chéng nián mò yòu huò shăo nǚ tā wèi chéng nián mò diào xì]
The boy isn't adult yet, do not tempt; the girl isn't adult yet, do not tease. The meaning emphasizes innocence needing protection, particularly warning against the temptation and exploitation of young, inexperienced teens by mature adults or others with power imbalances.