三日打鱼，两日晒网

Explanation: Metaphor for learning, job perseverance, often interrupted, can not long persist. 　　Source: Qing Cao Xueqin's "Dream of Red Mansions" Di Jiuhui: "therefore, the hypothesis to school, but three days fishing, two sun network, give away some gifts and Jia Dairu beam repair." 　　Examples: Physical exercise to keep watching, do not ~.