It's only been a year or two.
Except for those just repurposing old designs to make a quick buck, developing military-grade armor usually takes more than a year or two just to get started. Even when there are existing plans available for reference, perfecting the details and undergoing repeated evaluations and trials still consume massive amounts of time and resources.
The number of research groups and disciplines involved is countless.
For a massive project like this, even Ye Xian couldn't complete it alone.
But looking at it from another perspective... had the establishment of Sea Tide Military Industry and Guardian Lv's plan started before this?
"Off and on, changing and refining, most of the effort was outside the design phase. After measuring for so long, it's now nearly decided.
What I've done, aside from the engine and transmission, was merely a summary."
Ye Xian glanced at him: "Still need some final optimization, I'll leave it to you."
