Yifeng , Zheng. 2023. “BREAKING THE VICIOUS CIRCLE: COUNTERMEASURES FOR HEILONGJIANG PROVINCE’S ECONOMIC DEVELOPMENT AND POPULATION EMIGRATION”. American Journal of Business and Cooperative Research (AJBCR) 7 (1):24-29. https://zapjournals.com/Journals/index.php/AJBCR/article/view/1257.