Iron Dynasty

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“Your Highness, what is this coal briquette?” Wang Shijie asked, puzzled.

Xiao Ming gave a mysterious smile and signaled Chen Wenlong with a glance.

Understanding the gesture, Chen Wenlong instructed the craftsmen to bring in the coal briquettes they had made.

This coal briquette, also known as honeycomb briquette, was a cylindrical shape about ten centimeters in diameter, with holes running through it. In Xiao Ming’s previous world, this type of coal stove was very popular before the 1970s and 1980s, found in almost every household.

It could be used for boiling water, cooking, and heating—versatile and practical. Moreover, it was quite simple to manufacture.

Faced with this never-before-seen object, Wang Shijie and the other three were equally confused, waiting for Xiao Ming’s explanation.

“Take a closer look, everyone. This coal stove is essentially a cylinder divided into two parts by an iron rod. The upper part is the furnace, and the lower part is the air intake. There’s a vent on the outside—when it’s opened wider, more air enters, and the fire burns stronger. When it’s narrowed, less air enters, and the fire weakens. The coal ball is made by grinding and recasting coal briquettes. When combined with the stove, it produces a miraculous effect.”

After explaining, Xiao Ming personally took charge. He used charcoal and wheat straw to start the fire, then placed a honeycomb briquette at the bottom. He also used a clay tube as a chimney, placing it on top.

Wang Shijie and the other three stood together, whispering among themselves and watching Xiao Ming’s every move intently.

Soon, the fire grew strong, and the honeycomb briquette ignited. Xiao Ming then inserted a second coal into the stove and removed the small chimney.

At this point, blue flames were burning vigorously inside the stove.