Liu Ju 劉據, Crown Prince

http://www.chinaknowledge.de/History/Han/personslitaizi.html

Crown Prince Li 戾太子 (128-91 BCE), personal name Liu Ju 劉據, was a son of Emperor Wu 漢武帝 (r. 141-87 BCE) of the Former Han dynasty 前漢 (206 BCE-8 CE) and Lady Wei 衛子夫. He was therefore called Crown Prince Wei 衛太子 during his lifetime. Designated heir apparent in 122 BC he became the victim of a sorcery process at the imperial court at the end of Emperor Wu's reign. He was slandered by Jiang Chong 江充 to have plotted against his father, the emperor, together with his mother. Prince Li thereupon raised weapons, killed Jiang Chong and fought against the Capital guard but was defeated by Counsellor-in-chief (chengxiang 丞相) Liu Quli 劉屈氂. He was able to escape but soon after comitted suicide. Emperor Wu later pardoned him posthumously and had set aflame the mansion the Jiang Chong. Prince Li's grandson was to become Emperor Xuan 漢宣帝 (r. 74-49 BCE). Prince Li "the Outstanding" is his posthumous honorific title.

Sources: Xue Hong 薛虹 (ed. 1998), Zhongguo huangshi gongting cidian 中國皇室宫廷辭典 (Changchun: Jilin wenshi chubanshe), p.887. ● Zhang Huizhi 張撝之, Shen Qihui 沈起煒, Liu Dezhong 劉德重 (ed. 1999), Zhongguo lidai renming da cidian 中國歷代人名大辭典 (Shanghai: Shanghai guji chubanshe), Vol. 2, p. 1601.

https://en.wikipedia.org/wiki/Taizi

Taizi (Chinese: 太子, p tàizǐ, lit. "Supreme Son") was the title of the crown prince of imperial China.

Traditional Confucian political theory favored strict agnatic primogeniture,[1] with younger sons displaying filial obedience to the eldest upon the passing of the father. This rather straightforward system was somewhat complicated by polygamy: since later wives were subordinated to the first, their children – even when born first – were likewise subordinated to hers.

Following Lu Gu's conversion of Liu Bang to Confucianism in the early 1st century BC, Chinese dynasties observed it in theory though not always in practice. Liu Bang himself began to favor Concubine Qi, a later concubine, to his primary empress, Lü Zhi, and doubted the competence of his heir Liu Ying. Even worse conflicts could occur when invaders – previously observing their own rules of inheritance – began to sinicize, as happened to the 10th-century Liao dynasty.

Under the Ming Dynasty, the traditional Confucian principles of succession were upheld by the Hongwu Emperor's Instructions of the Ancestor of the August Ming. These presented a grave problem when his eldest son died early, leaving a power struggle between a sheltered teenage grandson and his many experienced and well-armed uncles. One of these, the Prince of Yan, eventually overthrew his nephew under the pretense of saving him from ill counsel. His own legitimacy was precariously established: a charred body was procured from the ruins of Nanjing and proclaimed to be the accidentally-killed emperor; the nephew's reign was then condemned and delegitimized and the surviving son kept imprisoned and single; and imperial records were falsified to establish the Prince of Yan as his father's favorite and as a son of the primary wife, giving him primacy over his other brothers.

As taizi, the crown prince would possess a name separate both from his personal name and from his later era and temple names.