ZHENGZHOU, Sept. 24 (Xinhua) -- A motorized division of the Chinese People's Liberation Army (PLA) arrived at the Queshan exercise ground in Henan Province, central China, on Monday, after a two-day long-distance maneuver.     The Army launched the Queshan 2007 exercise two days ago. It is designed to resolve problems exposed in last year's Queshan 2006 drills, according to military sources.     The motorized division, belonging to the PLA Jinan Military Area Command, left barracks on Sept. 23 and encountered "enemy" air raids, satellite surveillance and poisoning. Its engineering troops built temporary bridges and roads.     Armed with heavy equipment and 1,000 vehicles, the 10,000-strong division will fight "Blue Army" targets on a mountainous island.     The seven-day Queshan 2007 exercise is divided into four stages-- change of combat readiness, long-distance maneuvers, strategy planning, and combat.     During the exercise, there will be round-the-clock attacks under electromagnetic conditions, said Major General Wang Jun.     In October last year, the PLA headquarters organized the "Queshan 2006" exercise to assess the PLA's fighting capabilities, which led to a heated discussion on the reform of military exercises.     Some officers from the PLA General Headquarters and military academies who participated in the last year's exercise had been invited this time, to compare the results of the two exercises, said Wang.