During the summer vacation, many primary and secondary school students came to the memorial hall of the site of the second National Congress of the Communist Party of China in Jing'an District of Shanghai to visit the former site of the red and learn about red history. (on July 19, students and parents visited the memorial hall at the site of the second National Congress of the Communist Party of China.) (on July 19, students and parents visited the memorial hall at the site of the second National Congress of the Communist Party of China.) (on July 19, students and parents visited the memorial hall at the site of the second National Congress of the Communist Party of China.) (on July 19, a primary school student visited the special exhibition hall of the party constitution in the memorial hall of the site of the second National Congress of the Communist Party of China.) (Xinhua News Agency)