A sunken courtyard is a type of courtyard design where the courtyard is at a lower level than the surrounding ground. It is often used in traditional Chinese architecture and can create a sense of privacy and tranquility. The term 'open' suggests that the courtyard is accessible and not enclosed by high walls, allowing natural light and air to flow through. The 'scenic view' refers to the visual appeal of the courtyard, which may include elements such as plants, water features, and architectural details.