Chen Jian's premonition is not without basis. Compared to Ji Xing's pure intuition, in fact, his logic is a bit clearer.
At least he has some grounds.
Firstly, almost the entire Anqing City has already been searched through, and most of the useful materials have been taken away. If something is left behind, it proves that, in the eyes of the Mechanical God Sect, that thing isn't very useful.
Secondly, from the nature of the Ring Chamber of Commerce, they pursue those truly "high-tech products," things that lean toward "theoretical advancement."
And these kinds of things are crucial no matter which era they are in.
This airbase can be said to be the safest underground facility within the Anqing Ruins. If there really were such things, it would be quite reasonable for them to be stored here.
However, Chen Jian really couldn't fathom what those things might be.
Perhaps, they don't even exist in the era familiar to him.