Summary of Key Points Core Viewpoint - A significant cold wave is expected to hit most parts of central and eastern China starting January 17, leading to a notable temperature drop and snowfall in Beijing, which may adversely affect travel plans [1][2]. Group 1: Weather Forecast - January 17 marks the beginning of a cold wave, with Beijing experiencing a noticeable snowfall from the evening of January 17 to the daytime of January 18 [1]. - The highest daytime temperature in Beijing is expected to drop below freezing, resulting in a cold and damp feeling [1]. - The following week will see continued low temperatures, necessitating precautions against cold-related health issues, especially for vulnerable groups [1]. Group 2: Travel and Safety Warnings - During the snowfall, road conditions will be slippery, visibility will decrease, and there is a risk of snow accumulation and ice formation, which could hinder transportation [2]. - It is advised to avoid mountainous areas during the snowfall due to higher risks of snow and ice [2]. - Public is urged to dress warmly and take precautions against colds and cardiovascular diseases as temperatures drop significantly [2].