As evening fell, Li Xuan left the training grounds of the 'Tenth Regiment Camp' and returned to the space of Tianxingtai.
Unlike a few months ago, there had been significant changes here.
Besides the 'Heaven Palace' that was the size of a traditional five-bay quadrangle and the nuclear fusion Furnace, there were many new buildings to the south.
For instance, Leng Yurou had built a workshop here.
She had brought many experimental projects that were prone to accidents or even explosions into this space of Tianxingtai to work on them.
Several freelance alchemists Li Xuan had recruited also stayed here. They were not only tasked with researching smokeless powder for Li Xuan but also mercury fulminate primer.
The mercury fulminate was one of the earliest initiating explosives, highly sensitive to flame, piercing, and impact.
With mercury fulminate, one could abandon flint-based ignition and adopt the later-era 'percussion rifles' and modern metallic cartridges.
