The holder of the Supreme Black Card is a person of high status. They are either a high-ranking official or a super wealthy individual with great influence, even able to expel other passengers and have sole use of the space.,The cabin door creaked open, and Ren Kuang walked in with a white backpack on his back, holding a scroll of ancient texts and a smile on his face.,"Sister, you seem unwell. Your illness is serious, deep-seated. I have a bit of knowledge in traditional Chinese medicine, perhaps I could examine you and see how to help"。