Qingpu District Library 2024 "May Day" holiday opening time announcement Qingpu District Library 2024 "May Day" holiday opening time announcement Shanghai Qingpu District Library April 24, 2024 Source: Shanghai Qingpu District Library Editor: Lv Bin Qingpu District Library 2024 "May Day" holiday opening time announcement Qingpu District Library 2024 "May Day" holiday opening time announcement Qingpu District Library 2024 "May Day" holiday opening time announcement