This is an incredibly dark place, located beneath the Royal Hospital. It was originally an air raid shelter that hasn't been used for years. With the hospital built on top, this place became abandoned. At that time, Tang Qingxue and Yin Hun the Nineteenth were preparing to escape from the hospital entrance, only to find surveillance cameras everywhere on the roads outside. Although she could control the cameras within the hospital, she had no means to control the surveillance throughout the city. Therefore, as soon as she boarded any vehicle, Yeh Sha would discover them and quickly capture them back.
So, back then, she circled around the hospital and, taking advantage of the chaos, quietly slipped into the basement and then into the air raid shelter.
