After Luo Wentao finished speaking, two staff members came over immediately, moved the stone to the scale and started weighing it.

Some of the stones at this exhibition were in particularly good condition and would be sold at a price, such as the King and the one just selected by Luo Wentao.

But the vast majority of stones were not priced. When customers bought them, they weighed them by the kilogram and then calculated the price.

Soon, two staff members gave a quote. The ...