When the top mechanical engineer of the 21st century traveled back to the fifteenth year of Hongwu, he was a poor scholar in Yingtian Mansion. The original owner gave up the imperial examination due to family poverty and worked as a copyist in a bookshop. Lin Mo discovered that the technological level of this era was three hundred years behind his own knowledge, so he decided to use knowledge to change his destiny, but unexpectedly got involved in a court dispute.
The history has been slightly changed, but it's not a big problem, feel free to eat it
