Traditional courtyard houses — or siheyuan in Chinese — were the basic architectural forms used for residences and palaces throughout Chinese history. These days, many siheyuan in Beijing have been revitalized with an added zing of new furnishings: combining the classic with the modern. This has rekindled nostalgia and love for this property type among people living in concrete jungles. Follow CGTN's Song Yaotian through the city's labyrinth of hutong alleyways to find out why there is a revival of the siheyuan buying and rental market.