Jíshǐ tiānhándìdòng, tā yě jiānchí měitiān chén liàn.
Even in bitter cold, he insists on his morning exercise every day.
Tips
history
From the Ming-dynasty novel 《水浒全传》 chapter 65: 天寒地冻,军马难以久住 - 'with the sky cold and the ground frozen, the troops can hardly stay long.' Already a set phrase by the Ming.
memory
Perfectly parallel structure: 天 (sky) + 寒 (cold), 地 (earth) + 冻 (frozen). The whole world, top and bottom, frozen stiff.