Core Viewpoint - The seasonal migration of elderly people from Northeast China to Hainan, particularly to Sanya and surrounding areas, is a significant trend driven by the need for a more hospitable winter environment and improved health outcomes [4][10][28]. Group 1: Migration Patterns - The annual migration of elderly individuals from Northeast China to Hainan is a well-established practice, with many viewing Sanya as an ideal winter destination [4][10]. - Elderly migrants often use Sanya as a transit point before heading to nearby counties for a more affordable and suitable living environment [3][10]. - The migration is characterized by a collective movement, where one family's relocation often leads to others following suit, creating a "Northeast community" in Hainan [15][17]. Group 2: Health and Economic Factors - The harsh winter conditions in Northeast China, including low temperatures and health risks, drive elderly individuals to seek warmer climates for better health and quality of life [9][11]. - The elderly population in Northeast China is aging rapidly, with significant portions of the population over 65, leading to increased demand for winter migration [9][10]. - The concept of "human migration for survival" reflects the practical wisdom of the elderly, who prioritize health and comfort in their later years [11][28]. Group 3: Economic Impact on Hainan - The influx of elderly migrants has stimulated local economies in Hainan, particularly in transportation, housing, and service sectors [16][25]. - Rental markets have adapted to the needs of these seasonal migrants, with many opting for rental accommodations rather than purchasing property due to economic uncertainties [23][25]. - Local businesses, including food and service industries, have seen growth due to the increased demand from the elderly population, leading to a unique "migrant economy" [27][28]. Group 4: Challenges and Adaptations - Despite the benefits, the migration has led to challenges such as rising living costs and pressure on local resources, affecting both migrants and local residents [27][28]. - The relationship between the elderly migrants and local communities has evolved into a complex interdependence, where both parties contribute to and benefit from each other's presence [28][29]. - The need for improved infrastructure and services in Hainan is evident, as the local economy adjusts to accommodate the growing population of elderly migrants [25][27].