In the fifth year of Tang Gaozong Xianqing (AD 660), Su Dingfang, the general manager of Tang Shenqiu Dao's march, led his army across the sea to destroy Baekje, and captured King Yija of Baekje. In the seventh year of Daye (AD 605), Emperor Yang of the Sui Dynasty sent troops to conquer Liao, and the campaign of conquering Liao, which lasted intermittently for more than half a century, finally saw the dawn of victory. However, Su Dingfang had just captured the royal family of Baekje In Chang'an, Baekje was full of wars. The royal family Shuzong Guishi Fuxin and the monk Daochen welcomed back the prince Fuyu Fengzhang from the Japanese kingdom as a hostage, and launched the restoration movement. The Japanese also took the opportunity to send troops to the peninsula in an attempt to restore the four counties of Renna. Wang Wendu, the famous general who took over as the governor of Xiongjin, died of a sudden illness just after getting off the ship, and his ally Silla had an ambiguous attitude, and Tang's rule in Baekje was in jeopardy.