Belief is always involved in some scenarios.
Without knowing what to say and what not to say, how can one know whether to trust or not?
However, those who heard Ji Xinghe's question chose to believe without hesitation. No one asked Ji Xinghe what they should believe in because they had all thought of the implication behind his question.
The commander of Base Six had once used an excuse to stop Ji Xinghe from joining the battle.
He asked Ji Xinghe.
"What if a Duke Level Imperial Mech shows up?"
Ji Xinghe replied.
"Then it shall be annihilated."
At that time, no one questioned him, and Ji Xinghe didn't ask further, because it was all hypothetical.
Even some didn't believe that Ji Xinghe could acquire the hundredth gold star in a week on his own.
But now, Ji Xinghe had achieved it, the Duke Level Imperial Mech was indeed here, so Ji Xinghe posed a question and thus people answered.
"We believe."
They believed in Ji Xinghe, that he could eliminate the Imperial Duke.