In the 1960s and 70s, as Seoul’s modernization shifted into high gear, large numbers of residents living in Hannam-dong (한남동) and around the Cheonggye Stream (청계천) were relocated to make way for development projects.  Overwhelmingly poor, many simply living as squatters, a large number were resettled in Sanggye-dong (상계동), in far northeastern Seoul, where roughly…