C187 Sale recipe auction

"Alright, let's begin."

Following Tao An's words, the auction hall once again began to bid.

Because the reputation of coal had already spread out, the cheapness of the fuel caused every territory to need this kind of technology, so naturally, there was a great demand for it.

There were a total of 26 people who were sent to Yongfeng Ridge. Some of them were going too far