The Warring States Red in Beipiao is a rough stone trade. Now that the mine is closed, all it gets is small materials.

The biggest trading market for finished products of Warring States Red is Shijiazi Agate City in Fuxin, Liaoning.

There are photos in my Baidu photo album, and the first article in the space is also explained.

You can refer to the following contents

I hope the answer can help you.