【通宵达旦】〖tng xio dá dàn〗[all through the night; all night till dawn; throughout the whole night until dawn; work round the clock]

通险畅机著诗典，

宵旰攻苦汉英翻。

达兼天下共大同，

旦暮古稀稿校勘。

整整一夜，从天黑到天亮。Whole one night, from getting dark reach dawn. 同：夜以继日。反：一朝一夕。谜：夕阳西下几时回。