What's Wrong with the Central Army Being Stronger at the Start?

Ye Cheng traveled through time and space to an era of constant war. The sound of artillery outside Nanjing was deafening, and the people in Nanjing did not know that a massacre was quietly brewing. "Barracks, it's bad! Brothers are out of bullets!" "Don't worry, watch me buy, buy, buy!" What? Are we surrounded again? Calm down, arrange anti-infantry mines and artillery for the little devils, and let them smash their heads and bleed. What? You want us to enter the expeditionary force order! Brothers, my compatriots in Southeast Asia, Mr. Wang Shijiuye, it's time to teach those natives a lesson.