Kaifeng department store. Bow ties are daily necessities, which are sold in department stores or ordinary shopping malls. Kaifeng, formerly known as Tokyo, is a prefecture-level city in Henan Province, China. It is located in central China, eastern Henan, the hinterland of the Central Plains and the south bank of the Yellow River. The terrain is mainly plain, belonging to the plain in the middle and lower reaches of the Yellow River. The general trend of topography is inclined from northwest to southeast, belonging to the continental monsoon climate of warm temperate zone, with cold winter and warm spring, hot summer and cool autumn, and distinct four seasons.