At 14:11 on October 24, 2011, the official microblog of the Israeli Consulate General in Shanghai, "Israel in China", released a microblog: "From today on, we will successively put some old photos, all of which are Sam Sanzetti, a Jewish photographer on the Nanjing Road in Shanghai in the 1920s The names of the people in the photos have not been recorded because of their long history. If you see someone you know in the photo, perhaps your grandfather or grandmother, please let us know. " Our story begins with this microblog.