Anti-Japanese War: Showdown, Li Yunlong Is My Brother

In 1940, the main battlefield was Cangyunling in northwest Shanxi. My name is Li Yunhao, and I am a patriot. One night I fell asleep after watching the anti-Japanese drama "Bear the Sword" too late. When I woke up, I traveled back to the Anti-Japanese War period and became Li Yunlong's younger brother. Now, my brother is in trouble, so I decisively exchanged a mysterious weapon from the system to support my elder brother Li Yunlong. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.