This emperor was succeeded by his (*) second son after that son had his brothers assassinated in the Xuanwu Gate Incident.
While a military officer in Shaanxi, this ruler took bribes and drank excessively so as to deflect any rumors of him having imperial ambitions. Before reaching his highest post, this man implied fealty to fellow rebel Li Mi; understandably, Li Mi was disappointed when this man later appointed him his Minister of Feasts. This ruler's ascent to power was greatly aided by an army independently raised by his daughter Princess Pingyang, which she led to several victories. This ruler's son was victorious at a nonfictional Battle of Hulao in which he received the support of the nearby Shaolin Monastery. This emperor was succeeded by his (*) second son after that son had his brothers assassinated in the Xuanwu Gate Incident. For 10 points, who was this father of Emperor Taizong and founder of the Tang Dynasty?
While a military officer in Shaanxi, this ruler took bribes and drank excessively so as to deflect any rumors of him having imperial ambitions.
Emperor Gaozu of Tang (accept Li Yuan or Shude; do not accept Emperor Gaozu of Han)