[lù lù wú wéi]   

碌    碌    无    为    平平庸庸，无所作为。 贬义>

碌碌：平庸的样子。平平庸庸，无所作为。

Though seemingly always on the run, he accomplishes nothing

碌碌无闻    碌碌无奇    碌碌无能    碌碌无为    碌碌寡合