Chiseling or chiseling is correct

1. Formalization: As an idiom, "chiseling the wall to steal light" has been recorded in ancient literature and has been widely circulated and used. In contrast, "chiseling the wall to borrow light" does not have the same degree of formality and traditional cultural heritage, although it can convey a similar meaning.

2, language expression: from the point of view of language expression, "chisel wall to steal light" is more graphic and expressive. Through the word "steal light", it implies that in difficult circumstances, people have to take some special means to pursue knowledge. While "borrowing light" is relatively bland and cannot reflect the meaning of such twists and turns.