Liu Heita
Meanwhile, Liu Heita had been defeated and killed by Tang in 623, and his general Zhang Junli () fled to Gao. Zhang Junli and Zhang Jinshu subsequently plotted against Gao. One night, Zhang Jinshu had his coconspirators secretly cut the strings on the guards' bows and hide their swords and spears. After people were asleep, Zhang Jinshu and his coconspirators attacked Gao's mansion. When the guards realized that their weapons were useless or missing, they surrendered. Gao, realizing that his situation was hopeless, nevertheless put on his armor and armed himself with weapons, sitting in his great hall. He held a feast with his princess wife and concubines and ordered the music be played. The conspirators, fearing his ferocity, did not dare to approach. When dawn came, Gao committed suicide by hanging, and his wife, concubines, and sons all committed suicide as well. Zhang Jinshu then massacred Gao's adopted sons and Zhang Junli, surrendering to Tang.