Li Jiancheng (589-626), the eldest son of the first Tang emperor 李渊 lǐ​yuān, posthumously titled Prince Xiyin 息隐王 xī​yǐn​wáng and later Crown Prince Yin 隐太子 yǐn​tài​zǐ; he was killed by his brother 李世民 lǐ​shì​mín during the 玄武门之变 xuán​wǔ​mén​zhī​biàn (Xuanwu Gate incident)

Professor Li Jiancheng (1964-), a prominent Chinese geophysicist specializing in satellite geodesy