Hēi shuǐ chéng
ruins of Heishui town of Xixia 西夏[Xī Xià] people, in Eijin banner 額濟納旗|额济纳旗[É jì nà qí], Alxa league 阿拉善盟[Ā lā shàn méng], Inner Mongolia
Qí Xī
Qi Xi (c. 620-550 BC), minister of Jin state 晉國|晋国[Jin4 guo2] of the Spring and Autumn states
Qí Xī zhī jiàn
Qi Xi's recommendation (idiom); recommending the best person for the job independent of factional loyalty