Chinese tourists stand in front of a large screen set up for the 70th National Day celebrations as they visit Tiananmen Square on Sept. 27 in Beijing. (Kevin Frayer/Getty Images) BEIJING — There are many things that the Chinese Communist Party can control as it gears up to celebrate its 70th anniversary on Tuesday. It can dictate what people read and say on the Internet. It can say where people sleep and eat and drink . It decides whether they fly kites or sing karaoke . But not even the Chinese Communist Party can control the weather — although it is trying. In the weeks leading up Tuesday’s anniversary events, authorities have turned to their usual playbook to make sure the capital’s often-smoggy skies are blue for the huge military parade through Tiananmen Square, complete with fighter jets streaking multicolored smoke trails. Trucks have been banned from Beijing since […]