In 1129 AD, the third year of Jianyan reign of the Southern Song Dynasty, Jin soldiers invaded the south and the Central Plains fell. Yue Fei led the Yue family army to turn the tide in Jiangnan. The protagonist Li Yizhou traveled through time and became an ordinary captain under Yue Fei, carrying the [Magic Craftsman System] - earning points by killing enemies and unlocking blueprints of various weapons from the Southern Song Dynasty to World War II, from improved crossbows to muskets, to breech-loading rifles, machine guns, and mortars.
