 Taizong personally led 4,000 elite soldiers into the battle as well, the Goguryeo army's formation was broken, at least 20,000 Goguryeo soldiers were killed and 36,800 soldiers including their generals Go Yeonsu and Go Hyezin, surrendered.In the midst of battle Emperor Taizong spotted Xue from a distance and asked his attendants, "Who is that man in white armor?