摘要
<正>
In1402Mingdynasty,emperorYongledecidedtomakeBeijinghiscapital.Thisbecameatimeofmuchbuildingandevenrestorationofpartsofthecitywhichhadsufferedhundredsofyearsofdecayandneglect.Yonglewastheemperorwhoerectedthewallsoftheinnercitycharacterisedbyitshugegatetowers.Theyarerememberedtodayoftenbytheirnamesalone.Somedostillremainastestimonytothestrengthoftheformerdefensivebarriers.
出版日期
2004年01月11日（中国Betway体育网页登陆平台首次上网日期，不代表论文的发表时间）
