What's the difference between Changchun dialect and Mandarin?

Changchun people speak Northeast dialect, which belongs to the comprehensive mixed language of native Northeast people and Shandong immigrants, and is close to Mandarin in Northeast China. However, people in other parts of Northeast China speak Changchun dialect, which is quite different from Northeast dialect. For example, people in Liaoning speak the same language as people in Hebei, and there are several languages around Changchun: Northeast dialect-Changha Xiaopian (most people who say this are located in Changchun, Harbin, Songyuan, Jilin and Mudanjiang, ) Ji Shen Xiaopian (people who speak this kind of words are located in Shenyang, southern Changchun, Jilin, Tonghua, Baishan, Siping, Dandong, Benxi and other eastern Liaoning cities)-Yanbian dialect (located in Yanbian Prefecture, southern Mudanjiang and eastern Dandong)-Daxinganling dialect (located in Heihe, Jiagedaqi and northern Qiqihar in Daxinganling)-Inner Mongolia combines Chinese and Chinese intonation (Fuxin, Liaoning Province, Baicheng, Songyuan, Jilin Province)