Zombie Apocalypse: My Tower Defense System

In the zombie apocalypse, otaku Xu Feng accidentally awakened to the system and found that he could summon the Peashooter, the Ancient Tower of the Undead, and the Mecha Gundam... The end of the world? Doesn't exist! In the last days, I can still farm and cultivate the land, and my life is extremely nourishing. Zombies that evolve infinitely, insect nests coming from different dimensions, demons coming in the mysterious apocalypse... Endless threats are coming, can Xu Feng hold on to the fortress? Humanity's iron hooves, high-altitude aircraft carriers, jealous greed... Are humans in the end of the world teammates? Waking up from the dark night, this is the shadow Xu Feng needs to face... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.