Kēyán gōngzuòzhě qiánpūhòujì de tànsuǒ zhè yī nántí.
Researchers have pressed on, generation after generation, in the effort to crack this problem.
Tips
history
Variant of Tang-dynasty Sun Qiao's《祭梓潼神君文》: 前仆后踣 — the front falls, those behind stumble onward. The image is a battlefield where ranks keep advancing over fallen comrades.
mistakes
仆 here is pū (to fall forward, prostrate), not pú (servant). The whole point is the falling — confusing the readings breaks the image.
