[milkllz]

I went to the source and saw the map. https://www.cambridge.org/core/journals/antiquity/article/ra...

And from the map. It looks like it's around this part of Yellow River. (Guanzhuang, Xingyang, Zhengzhou, Henan, China 34.69942093691378, 113.36167182390584)

[k_sze]

Yes. That （關莊） seems about right. I was initially looking for 管莊 or 官莊, both of which would have the same phonetic spelling.