戙起牀板 (dung6 hei2 cong4 baan2) — to burn the midnight oil, to not sleep the whole night to work in Cantonese
dungˍ₆戙heiˊ²起congˎ₄牀baanˊ²板简 戙起床板
Mandarin Pinyin: dong4 qi3 chuang2 ban3
Meaning of 戙起牀板
nounto burn the midnight oil, to not sleep the whole night to work