Are Jingyue District and Nanguan District the same district?

Yes.

According to the query of Jilin Daily, the land under the jurisdiction of Jingyue Development Zone belongs to Nanguan District. Regarding the scope and name of the administrative region of Changchun City: Changchun City governs Chaoyang, Nanguan, Kuancheng, and Luyuan , Erdao, Shuangyang and Jiutai 7 districts (including Changchun Economic and Technological Development Zone, Changchun Jingyue High-tech Industrial Development Zone, Changchun New District, Changchun Automobile Economic and Technological Development Zone, Changchun Lotus Mountain Ecological Tourism Resort, China-Korea (Changchun) ) International Cooperation Demonstration Zone 6 Development Zones), the land used under the jurisdiction of Jingyue Development Zone belongs to Nanguan District, and the land used under the jurisdiction of Economic and Technological Development Zone belongs to Nanguan District and Erdao District.