Professor William Watson, Professor of Chinese Art and Archaeology at the University of London, and Magnus Magnusson continue their journey across modern China, visiting one of the world’s great Buddhist shrines; the caves at Lyang; Sian, the ancient capital; and the tomb of a T’ang princess who died in 701 AD In the Forbidden City of Kubblah Khan in Peking, a remarkable clock is discovered - a present to the Emperor from Britain’s first trade mission in the 18th century.