Li Jiancheng (589-626), the eldest son of the first Tang emperor [[李渊|李淵|li3 yuan1]], posthumously titled Prince Xiyin [[息隐王|息隱王|xi1 yin3 wang2]] and later Crown Prince Yin [[隐太子|隱太子|yin3 tai4 zi3]]; he was killed by his brother [[李世民|李世民|li3 shi4 min2]] during the [[玄武门之变|玄武門之變|xuan2 wu3 men2 zhi1 bian4]] (Xuanwu Gate incident)

An urbanized area that is fully developed or has been built up; a well-developed zone.