巴山蜀水

bā shān shǔ shuǐ

mountains and rivers of Sichuan (idiom)

the east of Sichuan and Chongqing Municipality

shān

mountain; hill (CL:座[zuo4])

shǔ

short name for Sichuan 四川[Si4 chuan1] province

shuǐ

water