The eastern part of the city of K'ai-feng and is adjacent rural area was under the hsien of K'ai-feng; the western part and its adjacent rural area under that of Hsiang-fu (at first called Chün-i).
“Selected Glossary”, in The Cambridge Encyclopedia of China, Cambridge University Press, 1982, →ISBN, →LCCN, →OCLC, pages 476, 480: “The glossary includes a selection of names and terms from the text in the Wade-Giles transliteration, followed by Pinyin,[…]K'ai-feng (Kaifeng) 開封”