w剪个短发凉夏天w留个长发暖冬天
[w jiăn gè duăn fā liáng xià tiān w liú gè zhăng fā nuăn dōng tiān]
Translates to 'With short hair to cool the summer and long hair to warm the winter'. This playful phrase describes adjusting one's hairstyle according to the season for comfort.