人不中二枉少年
[rén bù zhōng èr wăng shăo nián]
The phrase 'Rén bù zhōng'èr wǎng shàonián', which means 'One is not considered true teenager without going through otaku/geek stage'. Reflects a sentiment common in Asian youth culture where it's almost expected for teenagers to be passionate about hobbies or interests others may see as eccentric or geeky.