A dual-drive engine?
If the person saying that had been an engineer, the people in the room would not have been surprised. But the one who said it was Candle Dragon True Person, so...
Looking at Zhang Tie's iron-tower-like build, his whole body like a violent machine from ancient times, then at that murderous bald head of his, practically bearing the words "I'm the boss" on it, the five people in the room all gaped.
"Th-this... this was... True Person... invented by you?"
The oldest-looking old man in the room stared at Zhang Tie in utter astonishment and asked in disbelief.
"What, do I not look like an educated man? Are knights supposed to be simple-minded and strong-limbed?" Zhang Tie glared at him. The old man instantly felt a mountain-like pressure bearing down on him, frightening him so badly he nearly wet himself.
"N-no... no... What I meant was... was... True Person..."
The old man's tongue tied itself into knots from panic. The more nervous he became, the less smoothly he could speak; the less smoothly he spoke, the more nervous he became. In just a few seconds, beads of sweat the size of soybeans had covered his forehead.
"Please do not take offense, True Person. I believe Clan Chief Yan meant that anyone capable of inventing and designing such a machine must be a top expert in this field. Great Xia has knights like that, but none of us have ever encountered one. That is why, upon seeing the blueprints you produced, we were both impressed and shocked. We never imagined that True Person was a master of both letters and arms, even proficient in mechanical design. It truly leaves one marveling at the sight!"
The one who spoke up for the old man at that moment was actually