The history of the earliest documented Chinese opera performances in California (1852) and their successors during the following decades reveal how Chinese theatre in the diaspora was produced and consumed by Chinese immigrants, European visitors and Americans. On the one hand, a familiar repertoire eased the nostalgia and reinforced the national consciousness of Chinese immigrants, while on the other, the ethnocentric reading and writing of Chinese theatre helped establish an eternal frontier in the ‘old West’ to protect American national identity in late nineteenth-century California's periods of economic and political turmoil. Finally, the exoticism of California's Chinese theatre in America contributed to a European sense of American cultural uniqueness. Chinese opera performances played a crucial role in the invention of Californian identity.