Shanghai; Hongkou District: stone plaque with inscription at Sichuan Bei Lu (North Sichuan Road); The inscription (Chinese; English translation) reads: "In Sichuan Bei Lu there are many revolutionary sites; residences of famous personalities; representatives and martyrs of the Communist movement. On should walk slow and honor the place. We have tried hard to collect knowledge about the sites; the people ; and the historic happenings and want to remember these.