主脊是一次行程的八节点闭环(种草→规划→预订→行前→在途→体验→分享→复购,分享反哺种草),节点②③标红为「绞杀带」;每格区分两类 AI——提效(价值留在原主体)vs 截流(价值搬进 AI 入口)。特设入境游三堵墙专区(支付/语言/预订,政策×AI 双轮拆墙)与「最优线」刻度。姊妹分工:平台税同构→shop,照骗与出片→beauty,「被 AI 跳过」的零点击同构→traffic,夜游与演艺→night。 The spine: one trip’s eight-node loop (seeding → planning → booking → pre-departure → transit → experience → sharing → loyalty, sharing feeding seeding), nodes ②③ flagged red as the strangulation belt; each cell splits AI in two — efficiency (value stays with the incumbent) vs interception (value moves into the AI gateway). Special sections: the three walls of inbound travel (payment / language / booking, felled by policy × AI) and the optimum-line gauge. Siblings: the platform-tax structure → shop, camera-bait & looks → beauty, the zero-click «skipped by AI» structure → traffic, night tourism → night.