After the Anshi Rebellion, Suiye, the isolated city of Anxi, fell into a desperate situation. Zhang Yue, a border soldier, relied on his limited knowledge to lead the army and civilians to make salt, boil sugar, and build a soap workshop, surviving the desperate situation. The mute girl in the refugee camp turned out to be the missing Princess Tang An. When the identity of the princess was revealed, Anxi's military spirit was rekindled. From adhering to Suiye to exploring Southeast Asia, from reforming the Tang Dynasty to establishing the people's country "Xinxia", Zhang Yue and the princess and their team spent their lives completing the road of "defending the country - saving the country - establishing a new country". On the day when the white steam of the steam engine rose, the Anxi military flag fluttered over Nanyang.
