Kanto, Kansai. What places does Guanzhong generally refer to?

Kanto and Kansai mainly refer to Guanyuan, which is called Kanto in the east and Kansai in the west.

Kanto:

Ancient times refers to the area east of Hanguguan or Tongguan, and modern times refers to the northeast area east of Shanhaiguan. Cao Cao's "Hao Li Xing": "There are righteous men in Kanto, fighting for the heroes." Refers to the area east of Tongguan.

Kansai:

Refers to the area west of Hanguguan or Tongguan. Battle of Red Cliffs: "Ma Chao and Han Sui are still in Kansai, which is the future trouble of Cao Cao."

Guan zhong:

According to different ranges, the ancients used to call the area west of Hangu Pass Guanzhong. "The Hongmen Banquet": "Pei Gong wants to be the king of Guanzhong and make Zi Ying the phase." "On Qin": "The heart of the first emperor thought it was fixed in Guanzhong." Refers to the Weihe River alluvial plain at the northern foot of the Qinling Mountains in Shaanxi Province, China, with an average elevation of about 500 meters. Also known as Guanzhong basin. The northern part is the loess plateau of northern Shaanxi, and the southern part is the mountainous areas of southern Shaanxi and Qinba Mountain. Shaanxi is an area with developed industry and agriculture, dense population and rich land, so it is known as "Qinchuan in 800 Li".