Border troubles occurred frequently in the Chu Dynasty. Chen Mu, who was originally a handyman at the post station, accidentally activated the "Military Strategy Mission System". With the system's rewards such as "Fragments of Six Taoist Secrets" and "Wu Zi Bing Yao", as well as the ability to summon the phantom assistance of famous generals from past dynasties, he rose from being a postman delivering chicken-feather messages. First, he used the "empty camp strategy" to break the siege of Yumen Pass, then used the "enemy exhaustion technique" to defeat the Huns' 100,000 horsemen, and then led 3,000 Xuanjia troops to attack the Turkic royal court. In the process, it was revealed that his mother was the widow of the former Zhenbei King and that he was actually the orphan of a general. In the end, he defeated all nine sides and became the Grand Marshal of the Great Chu Army, earning the title of "The Immortal God of War."