Group 1 - The core viewpoint of the articles highlights the increased demand for heating gas in Nanjing due to a cold wave, with the city taking measures to ensure stable gas supply for residents during winter [1][2] - Nanjing has locked in a gas supply of 1.071 billion cubic meters to meet the expected total demand of 1.058 billion cubic meters from November to March [1] - Daily gas supply has shown a significant increase, rising from 6.56 million cubic meters on December 16 to 7.3 million cubic meters by December 23, indicating a direct correlation between temperature drops and gas consumption [1] Group 2 - The city has implemented a winter gas supply emergency plan, prioritizing gas supply for residential use and essential public services such as hospitals and schools [1] - Enhanced monitoring and maintenance of gas facilities have been initiated, including increased inspection frequency and safety management for gas transportation [2] - The "Ningcheng Smart" WeChat mini-program has been utilized to monitor gas supply and demand, providing data support for effective management and response [2]

Core Viewpoint - The article discusses the measures taken by gas companies in Nanjing to ensure a stable supply of natural gas during the winter season, particularly in response to a significant drop in temperatures expected from December 24 to 26, which is projected to increase heating gas demand [1][2]. Group 1: Gas Supply Measures - Nanjing's natural gas demand is expected to reach 1.058 billion cubic meters from November to March during the winter supply period [1]. - Gas companies have secured approximately 1.071 billion cubic meters of gas supply for the winter, ensuring there is no supply-demand gap [1]. - The secured gas supply is equivalent to the capacity of about 179 Xuanwu Lakes, indicating a robust supply assurance [1]. Group 2: Safety and Management Protocols - The gas supply management follows the "Nanjing Urban Gas Winter Supply Emergency Plan," prioritizing residential gas use and critical public services such as hospitals and schools [1]. - Increased frequency of inspections and maintenance of gas facilities has been implemented to ensure safety and reliability in gas supply [1]. - The "Ningcheng Hui" WeChat mini-program has been launched to monitor gas supply and demand, providing data support for effective management and emergency response [2].