Why is Shenyang also called Shengjing?

Shengjing was established by Nurhachi, and the original capital was Liaoyang, but later, considering the geographical location and historical reasons of Shenyang City, it was decided to be Shenyang. After the Qing Dynasty entered the customs, Dourgen proposed to move the capital to Beijing, and the three northeastern provinces were the birthplace of the Qing Dynasty. So he imitated the system of the two capitals of the Ming Dynasty and respected Shenyang as the capital, which is Shengjing.