The cross-linked version of the theme series "Love and Producer" has four car cards, each of which is a small certificate for future cooperation. These four car cards correspond to four leading men: Zhou, Xu Mo, Li Zeyan and Bai Qi. These car cards are made according to the standards of the Ministry of Communications, covering 245 cities across the country, including public transportation, subway and other modes of travel, covering a total of 22,000 bus lines and 52 rail lines across the country.