Lao Liu's Legend of Immortality, I Use Technology to Kill the Immortals!

[Female supporting ∞ + no heroine + no system + fake good guy + real sixth one] "So, trust the science." Another genius fell at the feet of Huang Bohu. "Please invite the next genius!" To make money, rent out idle aircraft and cannons. Couple, innate holy body of the deceased, innate holy body with black silk threads, innate holy body with white silk threads, innate... Technological magic - tail-stabilized shell-piercing sword. Well, the amount of power depends on the caliber of the shell. Immortal above, please accept the next shot!