少女不懂爱不是罪少男不懂情不是罪
[shăo nǚ bù dŏng ài bù shì zuì shăo nán bù dŏng qíng bù shì zuì]
Translating to, 'A young girl doesn't commit a sin by not knowing what love is, a young boy does not commit an error by not understanding romance.' It signifies that being immature about romance when one is still young is forgivable.