Deadline energy
Today's Mandarin: 最后一天效率最高 (zuì hòu yì tiān xiào lǜ zuì gāo)
Efficiency is highest on the last day.
Why this Mandarin works
Learners remember Chinese better when it connects to a real mood, not a sterile word list.
Context note
This is a playful modern phrase. Use it in casual contexts, not in formal writing.