Electric light stone fire diàn Guāng Shí huǒ
[Definition] Like the light of lightning; like the fire of flint, it flashes by. Metaphor that things disappear quickly. Also described as extremely fast.
[Quotation] Shi Daoyuan of the Song Dynasty "Jingde Chuan Leng Lu": "Stone fire and lightning; it has been a catastrophe.
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[Similar meaning] The electric light and morning glow are fleeting. They appear in the blink of an eye.
[Antonym] The earth is long and the sky is long-lasting.
The spots can be tested.