Examples Analysis 明清两个朝代，封建统治者实行闭关锁国政策， 阻碍了中国的进步和中外交流。 During the Ming and Qing Dynasties,the feudal rulers adopted a policy of seclusion, which hampered China's progress and its exchanges with the outside world.Examples Analysis ❖明清两个朝代，封建统治者实行闭关锁国政策， 阻碍了中国的进步和中外交流。 ❖During the Ming and Qing Dynasties, the feudal rulers adopted a policy of seclusion, __________hampered China’s progress and its exchanges with the outside world. which