Please answer the following question: What type of details about li chengqian can be gathered from the following bio? Bio: li chengqian -lrb- -rrb- -lrb- 618 -- january 5 , 645 -rrb- , courtesy name gaoming -lrb- -rrb- , formally prince min of hengshan -lrb- -rrb- , was a crown prince of the chinese tang dynasty . he was emperor taizong 's oldest son and first crown prince , but was replaced later by his younger brother li zhi -lrb- the eventual emperor gaozong -rrb- . li chengqian was created crown prince in 627 at the age of eight , after his father became emperor in 626 . in his youth , he had a reputation for good judgment , but was also said to be suffering from a foot illness . later on , he was said to be frivolous , favoring tujue customs instead of studying about ways to rule an empire . he lost favor in emperor taizong 's eyes to a younger brother , li tai the prince of wei . -lrb- both were born of emperor taizong 's wife empress zhangsun . -rrb- in 643 , in fear that emperor taizong was about to depose him in favor of li tai , he plotted with the general hou junji to overthrow emperor taizong . the plot was discovered , and he was deposed and reduced to commoner rank , but emperor taizong , believing that li tai to be responsible for li chengqian 's downfall , created yet another son , li zhi -lrb- also by empress zhangsun -rrb- , crown prince instead . li chengqian was exiled , and died in exile in 644 , as a commoner under house arrest . he was posthumously granted an imperial prince title during the reign of his grandnephew , emperor xuanzong after his grandson li shizhi became chancellor .
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- issue - title - reign - mother - death date - father - birth date - name