我敢素颜白衫帆布鞋瞎溜达
[wŏ găn sù yán bái shān fān bù xié xiā liū dá]
It translates to 'I dare to go out with a plain face, white shirt, sneakers, and wander around aimlessly.' It expresses a laid-back attitude or confidence in not worrying about appearances and enjoying simple pleasures without caring too much about how others see them.