三岁最萌五岁最酷
[sān suì zuì méng wŭ suì zuì kù]
'San Sui Zui Meng Wu Sui Zui Ku' means 'Adorable at Three, Cooler at Five'. It’s a playful way to describe someone (often children) growing up while retaining their cuteness and gradually becoming ‘cooler’ as they get older, showing a light-hearted personality.