广州、佛山停课，深圳启动四级响应

Group 1 - Guangzhou schools have received notices to suspend classes due to the impending typhoon, with a yellow warning expected to upgrade to orange [1][2] - The education bureau's guidelines mandate class suspension when a yellow or higher typhoon warning is issued [1] - In Foshan, the typhoon blue warning has been upgraded to yellow, leading to similar class suspension measures [3] Group 2 - Shenzhen has initiated a level four response to the super typhoon "Haikui," which is currently about 100 kilometers from the city [4] - The city has prepared 865 emergency shelters and is conducting safety checks on vulnerable infrastructure [4] - Experts warn of three main risks from "Haikui": extreme winds, potential flooding from astronomical tides, and significant rainfall expected to reach around 300 millimeters [5][6]