Daming: Rubbing the Mecha with My Hands, Lao Zhu Forced Me to Be the Consort

Lu Zheng travels through the Ming Dynasty's world of martial arts, and starts off as a small owner of a firearms shop who is on the verge of bankruptcy and about to be beheaded. At the critical moment of life and death, he awakened [Full Level Comprehension], observed blacksmithing and understood "Steam Qi", and just took a look at the scrap metal and made a Gatling repeating crossbow with his own hands! From then on, the style of painting suddenly changed. The six-door policeman rode a Harley motorcycle, and the Ming Dynasty Jinyiwei put on a heavy steam mecha!