Chapter 378 Repeated Calculations

To test the usage rate of coal balls, Feng Yun had actually already distributed them to the villages for trial use.

However, there was one condition: once the villagers received the coal balls, they couldn't sell them privately. The pricing and sales had to be uniform through the workshop.

The news of the He Residence had spread, and with it, the news of the coal balls disseminated far and wide, from one person to ten, and from ten to a hundred. Just as mass production began, merchants started to arrive in Andu one after another.

There were local traders from Andu County.

And others who came from places as far as Yupu, Wanning, and Shiguan.

Many even made special trips to the Coal Ball Workshop in Changmen to observe the use of coal balls.

To provide a more direct experience, the workshop kept its furnace burning without interruption, making its effectiveness immediately clear.