Transmigrating to Republican China as a Warlord

Wang Fei’s soul travels back to a village by the Yellow River in northern Shaanxi during the Republic of China era. His family is murdered by bandits, but he escapes that fate by going up the mountain to chop firewood. When Wang Fei returns and sees what has happened, his soul is shaken to its core. His modern soul successfully takes over the body, and a System comes with it. The System issues missions, and when Wang Fei completes them, he receives an infinite storage space containing thousands of acres of fertile land. The System also rewards him with loyal warriors, weapons, and ammunition. Wang Fei builds an army. How will he conquer this chaotic age, and what will he do once he has brought it under his control?