七天七夜整整七斤作业九天九夜整整九天思念
[qī tiān qī yè zhĕng zhĕng qī jīn zuò yè jiŭ tiān jiŭ yè zhĕng zhĕng jiŭ tiān sī niàn]
It refers to heavy academic workload over seven days that feels equally as burdensome as missing someone over nine nights. It combines stress about assignments with emotional longing, indicating a student’s frustration towards school work but contrasted with personal feelings.