Mount Xiao or Mount Yao (Chinese: 崤山; pinyin: Xiáo Shān or Yáo Shān) is a range of mountains in western Henan, China north of the Luo River and south of Sanmenxia. Major peaks include Qīnggǎngfēng (青崗峰; 1903 m) and Guānyúnshān (冠雲山; 1666 m). The range is part of the Xiáo (崤) historical region on the border of Hénán and Shānxī provinces in China. The area between Yáo and the strategic Hángǔ Pass was called Xiáohán (崤函).