都是牛奶装什么特仑苏
[dōu shì niú năi zhuāng shén me tè lún sū]
This username translates to 'Why act as if it's special when all milk is just milk?'. It reflects a sarcastic or cynical attitude, implying that things are overrated or unnecessarily exaggerated. 'Telesu' (特仑苏) is a well-known high-end milk brand in China, hence the reference.