1. Shanxi Province and Shandong Province are named after the east and west sides of the Taihang Mountains.
2. Shanxi, the provincial capital Taiyuan City, is named after it is located to the west of the Taihang Mountains, referred to as "Jin". In the Tang Dynasty, most of it belonged to Hedong Road; in the Song Dynasty, Hedong Road was established; in the Jin Dynasty, it was divided into northeast and south roads of the river; in the Yuan Dynasty, the Hedong Road in Shanxi was established, which was the beginning of Shanxi's name; in the Ming Dynasty, Shanxi Province was established, and later it was changed to Shanxi Chief Envoy; in the Qing Dynasty, Shanxi Province was changed to The name of the province has not changed to this day.
3. Shandong, the provincial capital Jinan, is named after its location east of the Taihang Mountains, abbreviated as "Lu". In the Tang Dynasty, most of it belonged to Henan Road; in the Song Dynasty, Jingdong Road was established, and later it was divided into Jingdong East and West Roads; in the Jin Dynasty, it was renamed Shandong East and West Road, which was the beginning of Shandong's name; in the Yuan Dynasty, Shandong East-West Road was established; in the Ming Dynasty, Shandong Province was established, and later it was changed to Shandong Bu Department of Political Envoys; Shandong Province was changed to Shandong Province in the Qing Dynasty, and the name of the province has not changed to this day.