Traveling Through the World of Cultivating Immortals, the System Asked Me to Build a Mecha?

When mechas appear in the world of immortality, what kind of friction will there be between the two? PS: This book is divided into a mortal chapter and a cultivating immortal chapter, but the mortal chapter will not occupy too much space. There will be a large number of battle armors and mechas in the book, such as Gundam, Mark series, Pacific Rim series, Master Chief, etc. The protagonist develops obscenely in the early stage and becomes violent in the later stage. . . This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.