What is the meaning of insight?

Epiphany: It means to really know and really see. It also refers to correct and profound understanding and incisive insights.

Burning: understand, thoroughly. Epiphany, the ancient meaning should be burning turtle shells to get instructions from heaven. The ancients used divination to get instructions from heaven, which is called true knowledge. Refers to clear and thorough understanding and insight

From Feng Ming Menglong's "Warning Records" Volume III: "People of insight are still wrong, let alone others!"