Daming Palace was stopped after the death of Li Yuan. Why did Tang Gaozong and Li Zhi insist on rebuilding Daming Palace?

Daming Palace can be said to be a representative building of the Tang Dynasty. At first, it was built by Emperor Taizong for his father, the founding emperor of the Tang Dynasty, Li Yuan. This huge project was not completed until after the death of Li Yuan. After the death of Li Yuan, the construction of Daming Palace was suspended, and it was not completed until Li Zhi, Tang Gaozong, was rebuilt. Before that, the emperors of the Tang Dynasty generally lived in the Taiji Palace, which was a grand palace built in Chang 'an by the Sui Dynasty. Besides its practicality, it also integrated knowledge of astronomy, geomantic omen and so on. According to the ancient concept of "the North Pole is supreme" in China, Tai Chi Palace was placed in the center of the north of Daxing City. However, the geographical location of Taiji Palace is actually in a depression. In summer, it is not only humid, but also sultry. The royal family living in Taiji Palace leaves Taiji Palace for the summer every summer. Therefore, Emperor Taizong wanted to build a summer palace for his father, but the project was delayed because of his father's death. When I arrived in Li Zhi, Tang Gaozong, because of the extra money in the treasury of Zhenguan rule, Li Zhi, Tang Gaozong, was sickly since childhood, and really couldn't stand the damp heat of Taiji Palace. After his rights were stabilized, he began to order the reconstruction of Daming Palace.

? This kind of behavior is actually supporting Wu Zetian. At that time, he had just abolished the Queen and set up Wu Zetian as his successor, so he needed to do something to stabilize Wu Zetian's position, so he showed the great changes of the Tang Dynasty to the whole world by building Daming Palace and expressed his position.