城内古居民宅全是清一色青砖灰瓦的四合院。轴线明确，左右对称。

The residences are all Siheyuan (quadrangles) made of black bricks and grey tiles with clear axes and bilateral symmetry.

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北京民居的外墙通常用深灰色的条形砖，青砖灰瓦是其典型的特征。

The external wall of Beijing residence are usually dark gery lath brick, its typical characteristics is grey bricks and tiles.

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最具特色的地方在于：其一是景观色系采用冷色系，仿岭南建筑风格，青砖灰瓦，就地取材，节约建造成本；

The first special point is that the sights are cold colors and all the buildings are south-oriented (make of brick and tile), this can save the cost;

youdao

最具特色的地方在于：其一是景观色系采用冷色系，仿岭南建筑风格，青砖灰瓦，就地取材，节约建造成本；

The first special point is that the sights are cold colors and all the buildings are south-oriented (make of brick and tile), this can save the cost;

youdao