Chinese idiom · 成语
空前绝后
Meaning
Unprecedented and unmatched; unique in history.
Character by character
Origin and story
Literary praiseAn early related expression, 超前絕後, survives in a quotation from the Jin imperial court records in Li Shan's commentary to the Wen Xuan. It praises exceptional achievements and virtue as surpassing what came before and after. The Tang critic Zhang Huaiguan uses the same form in Shu Duan to celebrate Zhang Zhi's extraordinary calligraphic skill.
The later idiom replaces 超 with 空 while keeping the sweeping comparison across time. It is an emphatic judgment of uniqueness, not a factual ability to know every future achievement. Accounts of ink-darkened practice pools sometimes accompany explanations of Zhang Zhi, but that anecdote is not needed to explain the phrase itself.
Sources and further reading
In everyday life
让这些演员再次同台太难了，今晚的演出堪称空前绝后。
It would be so hard to reunite these performers that tonight's show feels like a once-in-a-lifetime event.
A strong, often hyperbolic claim of uniqueness; stronger than merely unprecedented.