In the Era of High Martial Arts, I Used Machinery to Prove the Truth

In the interstellar age, in addition to warriors, a powerful and mysterious profession - mechanic - was born among humans. "Since the path of a warrior is unavailable, I will become a powerful mechanic." "What, my energy and blood conversion value does not support me becoming a powerful mechanic." "How about I install a mechanical heart?" "How about transforming Dantian directly into a mechanical heart?" "... Is there any danger?" "If you want to succeed, you must first go crazy. If you don't have the guts, there will be no productivity..."