Asphalt was used to pave roads, kerosene to light lamps.
Gasoline was transported to the Blackfire Brick Kiln Factory, where Grand Scholar Placido's students were testing a new type of gasoline-fired kiln. Supposedly, this gasoline kiln was theoretically more efficient than black oil kilns and produced more consistent quality.
Liquefied gas was put into storage. This liquid evaporated very easily, and once evaporated, it could easily ignite or explode on its own. No suitable use had yet been found for it.
Last came lubricating oil.
As its name suggested, this product could lubricate all kinds of components. Carriage axles needed lubrication, as did the maintenance of weapons and armor. It could even be used for wine cellar seals, windmill drive shafts, and other such places.
"Black oil looks like nothing more than a dark lump of ointment. Who would have thought it had so many wonderful uses? It truly deserves to be called Magic Metal nourished by Wyverns!"
Nicholas closed his densely filled notebook and sighed. "This field trip has yielded tremendous gains across the Blackfire Land. I can hardly wait to see what the Blackfire Land will look like in a few years!"
Before his words had faded.
A young knight came galloping over. After dismounting, he asked, "Are you Lord Nicholas? I am a follower of Baron Thunderflame. My name is Promi."
"Sir Promi." Nicholas bowed slightly. "I am Nicholas."
"Lord Nicholas, my lord invites you to attend the Blackfire Festival bonfire party at Cigar Castle tomorrow afternoon."
Nicholas was puzzled. "The Blackfire Festival?"
"Yes. My lord has designated the fifteenth day of the eighth month, when the crops are harvested, as a festival celebrating the opening of the Blackfire Land. It is called the Blackfire Festival," Promi explained. "This year will be the first Blackfire Festival."
"I