The smog made maneuvers by China's aerobatics teams unusually difficult to see, as the country seeks to shed its cities' reputation for pollution.HECTOR RETAMAL/AFP via Getty ImagesChina's hyped air show kicked off with performances from its aerobatics team on Tuesday.But the grand display was dampened by smog filling the skies over Zhuhai, Guangdong.The hazy opening comes as China tries to shed the reputation of its cities being heavily polluted.China's biggest air exhibition opened on Tuesday to smoggy skies obscuring an intricate aerobatics performance meant to display the country's aircraft to the world.The Bayi aerobatics team, a People's Liberation Army Air Force team that flies J-10 fighters, took off just after 10 a.m.