Is the Chinese accent spoken by Manchu emperors in Northeast China Beijing dialect or Beijing dialect?

It's a Northeastern dialect, because the emperors of the Qing Dynasty went back to Liaoning for a short stay every year, which was the capital of Shengjing, especially Kangxi, Yongzheng, Qianlong and Puyi. The Chinese spoken by the royal family in the Qing Dynasty is a northeast dialect with strong vitality and has not been influenced by immigrants to Kanto. Immigrants who travel to Kanto are relatively closed in the northeast circle. Look at the video of Puyi in the late Qing Dynasty. Unlike ordinary Beijingers, he speaks Northeast dialect. Zhang Taiyan speaks Mandarin from the northeast dialect, so today only the northeast and Beijing don't need to study Mandarin deliberately. In addition, ordinary voice is collected in two places, Harbin, Heilongjiang and Luanping, Hebei. However, Luanping used to belong to Jehol Province, specifically the northeast, and most of the ordinary phonetic objects collected by Luanping were descendants of soldiers stationed in the Qing army. Luanping belongs to Chengde, which belonged to the puppet Manchukuo before liberation. Harbin used to be the capital of the Jin Dynasty, and it was called Attending Beijing and Huining.