Pinyin: pàn ruhóng günot u
Interpretation: judgment: difference; Gorge: The ancient canal, in today's Henan Province, is a river that divides Chu and Han at the end of Qin Dynasty, which is a metaphor for the boundaries between things. The boundary is clear and the difference is obvious.
Source: Historical Records by Sima Qian in the Western Han Dynasty and Biography of Gaozu: "Xiang Yu is afraid to make an appointment with Hanwang and divide the world into Han in the west and Chu in the east."