Honestly, if it doesn’t end with people getting impaled on spikes in front of his castle, I have a tough time believing it was Vlad, lol. Pretty much everything ended with “And then they were impaled to serve as a warning to everyone else” like every damn time.
The Chu Ko Nu was more of a party-trick than a real weapon though. The amount of power behind each bolt was miniscule.
The actual “rapid-fire warbow” the Chinese used was the lol rocket-launcher. (Or really, Koreans did it first, strapping Chinese rockets to a bunch of arrows and lighting all of them at the same time, causing devastating effects on the battlefield). See Hwacha: https://en.wikipedia.org/wiki/Hwacha
Zhuge Liang’s biggest battlefield contribution in practice was probably the popularization of the “Ox Cart”, aka the Wheelbarrow. The Shu’s army could march further since they had such contraptions powering their logistics. Kinda funny to think that things like Wheelbarrows were still the stuff of sci-fi in the year 200 AD, but that’s where technology was in practice.
EDIT: The fact that Zhuge Liang’s lanterns (aka: hot air balloons) got practical usage back then is incredible though.