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Aviation units mainly carry out tactical training, combined with combat missions, focusing on combat technology and tactical application training to improve their ability to carry out missions under complex conditions. Every year, tactical, technical, theoretical and physical assessment is organized, and flight grade assessment is carried out, and pilots of Grade I, II and III are respectively assigned. The purpose of aviation unit training is to enable each pilot to master the combat technology of advanced aircraft and be able to undertake combat missions.(3) Ways for farmers to safeguard their rights;《寻路》真实展现了自1927年”4”大屠杀至1932年10月宁都会议五年间，毛泽东和他的战友们在中国革命的重大历史转折点，坚持从中国革命的实际出发，最终为中国革命闯出了“农村包围城市，武装夺取政权”这条胜利之路。同时表现了周恩来领导下的中共地下党在国统区建立隐蔽战线，与敌对势力斗智斗勇的较量。讴歌了陈铁军、周文雍等革命先烈的崇高精神，对教条主义、宗派主义以及腐化堕落、叛党变节分子进行了鞭挞和批判。剧中真实再现了四大屠杀、秋收起义、三湾改编、井冈山会师、黄洋界大捷、古田会议、三次反围剿胜利等重大历史事件，全面、准确、深刻地讲述了大革命失败后的血雨腥风和漫漫征程中，共产党人苦苦探寻中国革命道路的曲折历程，具有重大的现实意义和深远的历史意义。　　二零二零年，团队为嫦娥五号开发了「表面采样及初级封装系统」，火箭升空当晚，离开了的伙伴也回来，跟于杰和张宁一同见证历史时刻…岸上，桃花已经落尽残红，林中无人，只听得蜜蜂嗡嗡叫，安宁、祥和。