The Huining Ridge documentary was filmed on June 23rd, 2006. According to relevant data, Backbone is a large-scale documentary, which was jointly produced by the Party History Research Office of the CPC Central Committee, China CCTV, the Propaganda Department of the CPC jiangsu provincial party committee, Jiangsu Radio and Television General Station and the Central News Recording Film Studio, released by the Audio-visual Publishing House of the Central News Recording Film Studio and Huaxia Film Distribution Co., Ltd. and released on June 23, 2006.