Core Viewpoint - The super typhoon "Haikashan" is approaching China, expected to bring extreme wind and rain to southern regions, particularly affecting Guangdong and surrounding areas [2][6]. Group 1: Typhoon Characteristics - "Haikashan" intensified rapidly, becoming a super typhoon on September 21, with wind speeds exceeding 17 levels [2]. - The typhoon is currently located approximately 750 kilometers south-southeast of Yangjiang, Guangdong, and is moving northwest at about 20 kilometers per hour [2]. Group 2: Affected Regions and Weather Forecast - From September 23 to 25, regions in South China and southern Jiangnan are expected to experience heavy rainfall, with localized areas in Taiwan and coastal Guangdong potentially receiving over 400 millimeters of rain [2]. - The Central Meteorological Observatory predicts heavy to torrential rain in several areas, including parts of Liaoning, Shandong, Jiangsu, and Taiwan [3][4]. Group 3: Preparedness and Risks - Coastal areas in Guangdong, Guangxi, Hainan, Fujian, and Hong Kong need to prepare for the typhoon's impact, as the strong winds pose a high disaster risk [6]. - The occurrence of astronomical tides during this period may lead to seawater backflow in cities like Guangzhou and Zhuhai, increasing the risk of storm surges [7].

Core Viewpoint - The article discusses the recent sandstorm affecting southern China, particularly Guangdong, highlighting its unusual reach and the associated weather conditions. Group 1: Weather Impact - The sandstorm has significantly impacted a wide area, reaching as far as southern China, which is considered rare [1][10] - Guangdong is experiencing dust storms and temperature drops of 3 to 6 degrees Celsius due to strong winds and cold air [3][10] - The weather forecast indicates that most of Guangdong will be sunny to partly cloudy in the coming days, with minimum temperatures ranging from 10 to 20 degrees Celsius depending on the region [12] Group 2: Health and Safety Recommendations - Authorities recommend that vulnerable groups, such as children, the elderly, and patients, stay indoors to avoid health risks from air pollution [5][10] - General public is advised to reduce outdoor activities and wear protective gear like masks and goggles when going outside [12] - It is suggested to close windows and clean the face and nasal passages upon returning home to mitigate the effects of dust exposure [12]