A cold wave that brought heavy snow and freezing temperatures to northern China reached Shenzhen yesterday, bringing strong winds and a welcome drop in temperatures. The mercury is forecast to fall to about 16°C today, a relief for residents weary of T-shirt weather that stretched through much of the year. The Shenzhen Meteorological Observatory issued a blue alert for strong winds yesterday. The alert could remain in effect through today, and residents were advised to take precautions. The chill in southern China also prompted a lighthearted online reaction. The phrase “Guangdong residents can finally put away their T-shirts” was trending on Chinese social media