An Tui (English: burning oil in the dark; Simplified Chinese: 暗推) origins from the Wenzhounese (the dialect of Wenzhou).
This argot is firstly used by a Chinese teacher of Zhejiang Wenzhou High School, referring to the phenomenon that students learn after bedtime.
This action requires people to prepare a portable lamp because the school doesn't provide power during bedtime.
  Students would use light-shield curtains to prevent being found by housemasters.
This argot means studying hard without letting others aware of the diligent.
An Tui (English: burning oil in the dark; Simplified Chinese: 暗推) origins from the Wenzhounese (the dialect of Wenzhou). This argot is firstly used by a Chinese teacher of Zhejiang Wenzhou High School, referring to the phenomenon that students learn after bedtime. This action requires people to prepare a portable lamp because the school doesn't provide power during bedtime.  Students would use light-shield curtains to prevent being found by housemasters. This argot means studying hard without letting others aware of the diligent.
Zhejiang Wenzhou High School