Two women sit on the street with an umbrella in hand to shield themselves from the sun in Beijing on July 4, 2010. The strongest heat wave so far this summer hit the city on Sunday, with the temperature at noon above 35 degrees Celsius. The city's meteorological center has issued this year's first yellow-coded heat alert for Sunday, warning the heat wave will continue for the next three days. [China Daily/Asianewsphoto]