The work is based on the study of the historical event of the Ming Dynasty missionary Michel Boym(1612—1659)walking to Rome.The artist has installed a three-dimensional camera in the exhibition hall to capture the number of steps taken by visitors within a certain range, and to convert it in real-time into the actual distance traveled, accumulating along the historical journey of the missionary Michel Boym (1612-1659) from Kunming to Rome.As the artwork is exhibited, with the participation of audiences of different identities at different times, one day in the future, the cumulative movement on the map will eventually reach the Vatican. Audiences of different identities and at different times gradually come together to complete a long journey that truly occurred in history.