||In practical political terms, the Crown Prince was considered "without a firm's designated successor to
the throne," on the Tang Dynasty Crown Prince is concerned, since the A.D. 626 The Xuanwu Gate
Incident, in addition to the problem itself, the Crown Prince Tang Dynasty in addition, the emperor's
preferences, the threat of the royal family, Prince and de facto ruler of the Queen's support or not and the
effects of these various reasons are that it is rendered as an unstable state.
Time scope of this paper, since Gaozu Wude year (618) Emperor Gaozu of Tang establish its
Allegiance to Emperor Gaozong of Tang became the Crown Prince Hiromichi first year (683) Tang
Emperor died, the throne Prince Xian ended, a total of 65 years. This paper analyzes the meantime, the
Prince of elevating the status of discussions and waste legislation, and its sources, as well as the
situation was deposed Prince or cis position immediately after the discussion.
In Emperor Gaozu of Tang Dynasties, Sui Taizai view of Prince Li Jiancheng Yong Jin Wang Yang
Guang using political means because it is waste status Prince lessons Li Shimin its face threats for storage
spaces, in addition to expanding its Dong-Gong- Guan, but also With the establishment of military
medals to consolidate his position. Makes Li Shimin not get storage spaces by means of political
desperation only way to change the use of war seized power.
In Emperor Dynasties, Dong-Gong- Guan concurrently by more powerful minister, in addition toincreasing the Prince's political strength, but also mandates the protection of the Prince, as Prince
Chengqian ever-increasing threat to the reserve position in the face of the king and Lee Tae, the Emperor
Wei Zheng was also represented by any officer of Orient House, as a means of support for the incumbent
Prince, and Li Zhi Ren Taizi, it was also being supported by Sun loudly maintenance. Dong-Gong- Guan
to be seen at this time Prince is effective.
But in Emperor Gaozong of Tang, though still follow Dynasty towards practice, Quan Chen appointed
prime minister for the Dong-Gong- Guan, but has been more Dynasty towards qualification there is a gap,
in addition to the Dong-Gong- Guan in this period also decreased its position, can serve as Orient House,
the official office and from the powerful minister Prince Dong-Gong- Guan observed condition after
This concept dynasties period, Emperor Gaozu of Tang during Taizong, although the status of Prince
shaky, but by the appointment and promotion of the status of the Orient House Dong-Gong- Guan officer,
known emperor hoping artificially promote the throne succession process, be able to spend a peaceful and
smooth. But in the Tang Emperor towards status affected the Queen, Prince, so that the situation of its
dethronement of frequent occurrence, but it does not affect the Dong-Gong- Guan if solid Dynastyperiod,
but also makes the official status of the Orient House and its function gradually decreases.