In the eleventh year of Qianlong, three courtyards were built on the original site of Xiefang Hall as the residence of the prince. Because it is located in the south of Ningshou Palace, it is also called "South Third Hospital" or "Argo Hospital" or "Sol".
Extended data:
Nansan is a palace building in the Forbidden City in Beijing. * * * Palace Gate 1, 3 rooms wide and 1 room deep. Green glazed tiles rest on the top of the mountain, the door is open in the middle, and there is a slow road inside and outside. There is a long and narrow Little Square in the gate, and there are three in turn from east to west on the north side of the square, three before and three after. According to the feudal etiquette system, the roofs of the three buildings in the south are all single-eaved hard hilltops or rest hilltops, which are slightly inferior to the temples used by the emperor.
Reference: Baidu Encyclopedia-South Third Hospital