I I have crossed over to become a city lord, but only with special eff

Li Mugui has traveled to a world where martial arts reign supreme, and he has become the newly appointed city lord of a fortress on the border of the dynasty!

However, he faces both internal and external troubles. The local aristocrats within the city intend to force a palace coup to usurp his position, while the demons and barbarians outside the city are eyeing the city hungrily.

Fortunately, he possesses a special effects system that grants him various incredible abilities!

From then on, many unparalleled geniuses and powerful figures suddenly emerge in this world!