Lu Xingjian traveled to the Song Dynasty and became an apprentice in a coppersmith shop.
He has knowledge of modern metallurgy and firearms in his mind.
Soldering iron to ask? See through the alloy ratio at a glance and kill the manager.
A slap in the face from Zuibailou? After thirty breaths, the self-ringing clock is repaired and its accuracy is doubled.
Arms supervisor competition? The arrows are made from waste materials, and the hardness is increased by 30%, which is a slap in the face to the twenty-year-old craftsman.
The Jin cavalry went south?
Compound bows, muskets, artillery, and synthetic tactics are all arranged.
Five years later, the Jin Kingdom's 300,000 troops pressed into the territory.
Hundreds of artillery fired volleys, and five thousand firearms soldiers were arrayed.
"Da Song is not someone to be bullied."
