At 4:45 a.m. you wake to the gently rocking train and the early, absurdly early, Chinese morning light. It gets light around 4:30 now, probably because China rejects the idea of time zones in favor of national solidarity.
Waking up at quarter to five — usually the thickest slog of night with darkness and dreams at their heaviest — and seeing pale green light rising is yet another of those in-between-worlds sensations so frequent in life in China.