The Battle of Hulao (May 28, 621), located just east of Luoyang, was a decisive victory for Li Shimin, through which he was able to subdue two warlords, Dou Jiande and Wang Shichong. Li Shimin led a siege on the city of Luoyang, head of the self-declared emperor Wang Shichong, who solicited help from Dou Jiande from the east. However, Dou Jiande delayed and when he finally arrived, Li Shimin brought forces to meet the new threat. Li Shimin's army avoided conflict until the troops of Dou Jiande were exhausted and then led a cavalry charge, effectively capturing Dou Jiande. Afterwards, Wang Shichong, seeing no other choice, surrendered Luoyang. Dou Jiande was later executed, resulting in some of his followers raising an unsuccessful coup against Li Shimin. May 28 is the 148th day of the year in the Gregorian calendar (149th in leap years). ... Events Byzantine Emperor Heraclius invades Persia Muhammad visits heaven, in the Isra wal-Miraj Suinthila succeeds Sisebut as king of the Visigoths. ... Luoyang(洛阳) (Simplified Chinese: 洛阳; Traditional Chinese: 洛陽; pinyin: ) is a city in Henan province, China. ... Emperor Taizong of Tang China (January 23, 599–July 10, 649), born Li Shimin, was the second emperor of the Tang Dynasty of China from 626 to 649. ... Emperor Taizong of Tang China (January 23, 599–July 10, 649), born Li Shimin, was the second emperor of the Tang Dynasty of China from 626 to 649. ... Luoyang(洛阳) (Simplified Chinese: 洛阳; Traditional Chinese: 洛陽; pinyin: ) is a city in Henan province, China. ... Emperor Taizong of Tang China (January 23, 599–July 10, 649), born Li Shimin, was the second emperor of the Tang Dynasty of China from 626 to 649. ... Emperor Taizong of Tang China (January 23, 599–July 10, 649), born Li Shimin, was the second emperor of the Tang Dynasty of China from 626 to 649. ... Luoyang(洛阳) (Simplified Chinese: 洛阳; Traditional Chinese: 洛陽; pinyin: ) is a city in Henan province, China. ... Emperor Taizong of Tang China (January 23, 599–July 10, 649), born Li Shimin, was the second emperor of the Tang Dynasty of China from 626 to 649. ...

Further reading

• David Graff, Medieval Chinese Warfare, 300-900, (2002) ISBN 0415239559