Updated the blog post on Huo Dan (η«ε½) and added in an improved, rapid firing roman candle variant of the weapon.
I've also detected that Mao Yuan Yi's description of Fei Kong Sha Tong (ι£η©Ίη η) is erroneous and corrected it. The weapon was actually sensibly designed, but Mao Yuan Yi misunderstood/misinterpret its applications. That's what you get for a military treatise written by someone well-read but had little actual experience. Other examples of Mao Yuan Yi's screw ups include the famed Flying Crow and possibly Fire Dragon.
In addition, currently about 50% of my blog posts don't show up properly due to some weird pagination issues. I've added jump breaks to (hopefully) most of my articles, but no idea how it will turn up.