Ghost Siege: Start with a Big Bertha

Traveling through the tower defense era, you are alone, with no background and no resources. Soon after, the ghosts attacked the city. On this occasion, Xia Li summoned a big Bertha. Work hard to develop, actively explore, and lead mankind to complete the counterattack in this world where ghosts and monsters are rampant! "Summoning!" Xia Li thought silently in his heart. Looking at the white-haired woman in front of him, Xia Li smiled. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.