Where is Kaifeng in that province?

Kaifeng belongs to Henan Province.

Kaifeng, referred to as Bian, was called Bianjing and Bianliang in ancient times. It was the ancient capital of eight dynasties and a prefecture-level city in Henan Province. Located in the central and eastern part of Henan Province, it is connected to Shangqiu to the east, Zhengzhou to the west, Xuchang and Zhoukou to the south, and faces Xinxiang across the Yellow River to the north.

Kaifeng City is located in the middle and lower reaches of the Yellow River, southeast of the Taihang Mountains, in the central and eastern part of Henan Province, with east longitude 113°52′15"-115°15′42" and north latitude 34°11′45"-35 °01′20", it is connected to Shangqiu City in the east, 500 kilometers away from the Yellow Sea, adjacent to the provincial capital Zhengzhou in the west, Xuchang City and Zhoukou City in the south, and the Yellow River in the north, facing Xinxiang City across the river. Kaifeng City has a total area of ??6,266 square kilometers and an urban area of ??1,849 square kilometers. It is about 92 kilometers wide from north to south and 126 kilometers long from east to west.

It is 500 kilometers away from Lianyungang, the port at the eastern end of the Eurasian Continental Bridge, and 72 kilometers away from the provincial capital Zhengzhou in the west. It is located in the center of the Eastern Henan Plain on the Chinese territory