Back then, when Tang San had Divine Craftsman Lou Gao and a large quantity of precious metals transported to the Clear Sky Sect, he also left the recipe for explosives there. He had already experimented with it, proving that explosives could indeed be made in this world. Thus, Lou Gao was tasked not only with creating Peach Blossom Needles but also the Tang Sect's most powerful hidden weapon, the Furious Tang Lotus. This was a terrifying weapon Tang San had devoted much effort to researching in his previous life.
In comparison, the process of making the Furious Tang Lotus was more difficult than that of the Peach Blossom Needles, as preparing the explosives and casting the core were both exceptionally challenging. However, Tang San had experience making the Furious Tang Lotus, and therefore, the blueprints he left for Lou Gao were much more precise, detailing every single aspect. So, from Lou Gao's perspective, it was the Peach Blossom Needles that posed a greater challenge.
