sentences:  He was eventually promoted to the post of deputy minister of civil service.Emperor Taizong died in 649 and was succeeded by his son and crown prince Li Zhi (as Emperor Gaozong).Around the new year 667, Emperor Gaozong commissioned the chancellor Li Ji to command a major attack on Goguryeo, and Hao Chujun was made an assistant to Li Ji, a campaign during which Hao served with distinction.