1019，，by、，。Lecture“  ”，Those who have made contributions to the care of the old city of Beijing。，Warm atmosphere，。

，First of all, it introduces the distribution of urban gates in Beijing.、。，•Xi Ren、、，：The city is the capital of ChinaOf，，，，，We work as、，。

，。，Manifold expression：All kinds of activities，，，，，。

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