Guoyun: My System Comes with Marvel's Black Technology

[System + Iron Man + Relaxation] Tang Xiaofan came to the Continent of Gods and Demons, became the master of the castle, and participated in a fair and just competition for hegemony among all races. At the beginning of advent, each castle lord will randomly receive a military building. Recruit troops, plunder resources, establish a dynasty, and compete for hegemony among all races! And Tang Xiaofan was surprised to find out. What he randomly arrived at was the unique military building [Farmer Factory]! Only the lowest type of farmer can be produced! Even so, he didn't expect that the system would help him! "Sir, I am your system, and my name is Jarvis." "Sir, it has been detected that your world is extremely dangerous, and the optimal solution has been given... The Mark 1 mecha." "Sir, I recommend that you form a steel mecha corps as soon as possible and start your journey to rule the continent." "Sir, I recommend that you occupy the Chou Kingdom's castle as soon as possible and make the Chou Kingdom surrender to the Dragon Kingdom!"