旗下

旗下	qí xià	under the banner of
旗	qí	flag / variant of 旗
旗	qí	banner / flag / (in Qing times) Manchu (cf. 八旗) / administrative subdivision in inner Mongolia equivalent to 县 county / CL:面
下	xià	down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action