Core Viewpoint - Zhangjiakou is focusing on ecological restoration and sustainable development, aiming to enhance water conservation, increase green coverage, and promote industrial transformation during the 14th Five-Year Plan period [2][3][5][7]. Water Conservation - Zhangjiakou has implemented a four-pronged approach ("storage, protection, conservation, and increase") to strengthen water source security, particularly in the Yongding River and Chaobai River basins [3]. - The city has constructed 991,500 acres of high-standard farmland and implemented efficient water-saving irrigation on 335,800 acres, leading to a reduction of irrigated land by 521,400 acres [3]. - By 2025, an additional 80,000 acres will be retired from irrigation, and groundwater over-extraction will be reduced by 50 million cubic meters [3]. - Ecological restoration efforts have resulted in a significant increase in the water area of Chahan Noer from 12.2 square kilometers in 2021 to 74.8 square kilometers by 2025 [3]. Green Coverage - Zhangjiakou has initiated four major actions focused on "blue sky, clear water, increased greenery, and clean soil," leading to substantial ecological improvements [5]. - The city has planted 6.035 million acres of trees and restored 2.11 million acres of grassland since 2021, significantly enhancing the ecological landscape [5]. - The PM2.5 average concentration in Zhangjiakou has ranked first in the Beijing-Tianjin-Hebei region for four consecutive years, indicating improved air quality [5]. Industrial Transformation - Zhangxuan Technology is utilizing "hydrogen-based reduction" and "precise melting separation" technologies to enhance resource recycling efficiency in the steel industry [7]. - The ecological foundation of Chahan Noer Wetland is being leveraged to develop eco-tourism, attracting over 500,000 visitors annually and generating tourism revenue exceeding 50 million yuan [7]. - The transformation of abandoned mines into eco-friendly tourist destinations is creating new business opportunities, including camping and ecological education [7].