It takes readers into a sun-scorched wasteland world. Fan Bang, the former courier and now the leader of the Wu League, looked at the twisted old factory in the shadow of the watchtower. A deduction result about the energy core and the mark of the enemy trace "Shadow Pavilion" were waiting for him to deal with. From activating the "student master system" near death to establishing a power of ten thousand people, the calluses and scars on his palms have never forgotten the struggles of the past. The Wumeng headquarters was built on the ruins of the library, where young people sweated and practiced boxing. While he was teaching the orphan Chen Douzi, he inadvertently revealed his strict protection. The hot, rough, and tenacious breath of survival blows in the face, and a story of rebuilding order amidst destruction and teaching hope in desperate situations is beginning.