Group 1 - The core idea of the articles revolves around the transformation of the elderly consumer market, highlighting a shift from basic survival consumption to a focus on personalized, self-satisfying experiences, termed "悦己银发" [1][2][49] - The emergence of retirement clubs catering to the elderly's new social and entertainment needs, offering activities like DJing, dancing, and games, indicates a significant market opportunity [4][5][49] - The trend of "情怀消费" (emotional consumption) is exemplified by the growing interest of the elderly in attending concerts, such as those of the artist 刀郎, which serve as a nostalgic experience and a way to connect with their past [25][49] Group 2 - Four new consumption trends for the elderly have been identified: social clubs beyond traditional activities, emotional consumption through concert tickets, tailored fitness products for the elderly, and beauty services aimed at enhancing their appearance [2][31][49] - The business models of retirement clubs vary, with some operating on a membership basis and others offering pay-per-activity options, reflecting the diverse preferences of the elderly [6][8] - The beauty industry is responding to the elderly's desire to maintain their appearance, with brands launching products specifically designed for older consumers, indicating a growing market segment [35][36][49]