Core Viewpoint - The New Year's Eve celebrations are expected to be impacted by a significant cold wave and snowfall across various regions in China, particularly in the central and northern areas, affecting outdoor activities [1][3][5]. Weather Impact - A cold wave will bring strong snowfall to regions such as Henan, Hubei, and Anhui, with some areas experiencing heavy snow [3][4]. - Northern regions like Inner Mongolia, Xinjiang, and parts of Northeast China will face extremely low temperatures, with some cities recording below -20°C [4][7]. - Southern regions, including Yunnan and Guangdong, will experience milder weather, with temperatures around 15°C, making it suitable for outdoor activities [4][8]. Popular Activities - Major cities such as Shanghai, Harbin, and Beijing are highlighted as popular destinations for New Year's Eve celebrations, featuring fireworks, countdowns, and cultural performances [5][7]. - Specific events include a large-scale fireworks display in Guiyang and various outdoor activities in cities like Kunming and Dali, despite the cold weather [8]. Recommendations for Attendees - Attendees in colder regions are advised to wear appropriate winter clothing, including thick down jackets, hats, gloves, and scarves to stay warm during outdoor events [7][8]. - In cities with milder temperatures, participants should still dress warmly, opting for long sleeves or hoodies to prevent getting cold [8].

Core Viewpoint - Nanjing will host various offline cultural and tourism activities in multiple commercial districts on December 31, aiming to create a unique night experience while ensuring traffic safety through increased police presence and traffic management measures [1]. Traffic Management - The Nanjing Public Security Traffic Management Department will enhance police deployment and implement temporary traffic control around key commercial areas and event sites, advising citizens to check road conditions in advance and use public transportation [1]. - Specific traffic control measures will be in place around the Yuantong commercial area, with expected increased traffic flow during peak hours, leading to potential restrictions on certain roads [3]. - The traffic management will include measures such as allowing only exit for vehicles at 13 parking lots along major roads near the New Street area, with further restrictions on non-motorized vehicles and all vehicles later in the evening [6]. Parking and Public Transport - The Yuantong International Expo Center will provide approximately 3,000 parking spaces, with citizens encouraged to park in designated areas [3]. - For the Xianlin area, ample parking is available, and public transport options include the convenient access via Metro Line 2 [5]. - Additional public transport options are provided for other commercial areas, with specific instructions for parking and public transport access to various shopping centers [8][9].