Luoyang, Kunyang, Nanyang, Caiyang, Biyang, what does "Yang" mean in place names? There are many place names with the character "Yang" in a large contiguous area in Henan.

The commonly used "Yang" in place names--generally refers to the south of the mountain or the north of the water

Luoyang, Henan Province--refers to the Luo River. North

Kunyang is now Ye County, Henan. It was named because it is north of Kunshui.

Nanyang, also known as Wan in ancient times, is a prefecture-level city under the jurisdiction of Henan Province. It is located in the southwest of Henan Province and the junction of Henan, Hubei and Shaanxi provinces. Because it is located south of Funiu Mountain, Han Dynasty It is named after the water to the north.

----In short, many place names with the character "Yang" are mostly named south of a certain mountain or north of a certain river