厉害的不要不要的哥可爱的不要不要的妹
[lì hài de bù yào bù yào de gē kĕ ài de bù yào bù yào de mèi]
This name translates to ‘A brother so awesome you can't bear it, and a sister so cute you can’t bear it’. It expresses admiration and affection for the awesomeness of an elder brother figure, and the cuteness of a younger sister, possibly exaggerating for emphasis.