Anti-Japanese War+Shuangwen+Hot-Blooded
In order to guard the graves of his fallen comrades, retired "Wolf King" Li Yunlong (pseudonym) opened a militia training camp on the border, specializing in veteran ruffians. Unexpectedly, an accident triggered the mysterious "Altar of Heroes" buried under the martyrs' cemetery, transporting him and the entire training camp's veteran artillerymen, including people and equipment, alive to the enemy-occupied area in 1937!
With no support or logistical supplies, Li Yunlong showed his fangs with this group of old guys who had the most soldiers per capita.
Until he used an 88 sniper to name the Japanese major general from a thousand meters away, used an RPG to blow up a Japanese armored vehicle, and used a homemade drone to guide mortars to bombard the Japanese headquarters... The Japanese all over North China went crazy: What kind of monsters are we facing?