The Iron King of the Late Ming Dynasty

I committed sins in my previous life, and now I am blacksmithing. My back is arched, my belly is tilted, and everyone calls me blacksmithing. Cheng Yannian has a nickname called Datie, also known as Laoda. He got this nickname because he was a steel plant engineer. With a double degree from a prestigious university, he unexpectedly came to the late Ming Dynasty. Let's see how he survives, how he gets rich, and finally turns things around. History often makes people regretful, so let us rewrite it in our own way and write a beautiful chapter.