兴安县老山界龙潭江景区入口。1934年冬，中央红军从这里翻越老山界。徐天保 摄 苍苍越城岭，巍巍老山界。 1934年冬，中央红军高举火把，在"几乎是九十度的垂直的石梯"上，翻越了长征路上"第一座难走 的山"。陆定一的《老山界》，记下了那"之"字形火把映山的艰险，也记下了"苛捐杂税对瑶民特别 重"的民生之艰。 九秩光阴流转。这片曾见证红军壮举、承载山民辛酸的土地，如今正落笔怎样的续章？ 原标题： 在红军长征胜利90周年前夕，记者重访长征路上"第一座难走的山"—— 老山界新记 车轮疾驰，20分钟后，同仁村龙塘寨到了。91年前，中央红军主力就是从这里出发，翻越老山界， 留下"五岭逶迤腾细浪"的壮丽诗行。如今，这里是长征国家文化公园广西段的重要节点。 我们沿着步道，穿过红军广场，前往当地有名的龙泉山庄农家乐。路旁看到几口水池，山泉汩汩环 流，池中鲟鱼、草鱼体态修长，"皆若空游无所依"。 "这叫'瘦身鱼'。从山下买来后，放在泉水里饿养一年半载，吃起来比豆腐还滑嫩。"山庄老板娘范 玉成擦着手迎上来。山庄有15间客房，餐饮加住宿，年收入超20万元。 2025年岁末，我们重访老山界。 风从新路来 车出兴安县华江瑶族乡猫儿山高 ...

Core Insights - The fish farming base in Fengdu, Chongqing, has experienced a 35% decrease in total production but a 10.3% increase in total output value, indicating a successful strategy in enhancing product quality over quantity [2][4]. Group 1: Production and Value - The "slim fish" produced at the base has a market price of 16 to 18 yuan per pound at the farm gate, with retail prices ranging from 25 to 30 yuan, reflecting its high market demand due to lower fat content and better taste [3][4]. - The base has invested in facilities that promote fish exercise, akin to a "treadmill," which contributes to the quality of the fish by reducing fat and enhancing meat texture [3][4]. Group 2: Environmental and Nutritional Factors - The fish are raised in high-quality water sourced from natural springs, which is rich in beneficial elements like selenium and strontium, further increasing the nutritional value of the "slim fish" [3][4]. - The local government is working on establishing a brand standard for "rich strontium and selenium fish" to enhance market reach and ensure product quality through a comprehensive traceability system [4][5]. Group 3: Economic Impact and Future Plans - The annual output value of "slim fish" is projected to reach 5 million yuan, marking a 50% year-on-year increase, benefiting local farmers across six towns [4]. - The county is also exploring financing options to integrate "smart aquaculture" with photovoltaic energy, aiming to reduce operational costs and generate additional income from electricity sales [4][5].