Traveling back to the Northern Song Dynasty: Picking up a princess as my wife

Li Zhen, through a chance encounter with a jade pendant, travels back and forth between the modern era and the Song Dynasty. With this magical pendant, he thrives in the Song Dynasty, not only carving out his own territory but also unexpectedly encountering Princess Zhao Yingluo, eventually becoming the brother-in-law of Emperor Zhao Gou of the Southern Song Dynasty. The Jin Dynasty, the Yuan Dynasty, and even the Southern Song Dynasty are utterly insignificant compared to their modernly equipped armies. Steel-reinforced spears clash with Jin Dynasty scimitars, and tractor-drawn corps overpower Mongol cavalry. The Southern Song is wealthy? Do your soldiers eat instant noodles and luncheon meat every day? Before absolute power, any schemes and tricks are futile. Watch as Li Zhen establishes his own power in the chaotic Song Dynasty...