Soapstone carvings of grotesque creatures , meant to ward off bad spirits capped the flying buttresses along the palace rooftop , set in different angles and curves .
鸡血石雕刻奇形怪状的动物，为了抵御妖魔鬼怪封顶沿飞行宫殿屋顶在不同的角度和曲线集，扶壁。
The greenish color of the water , and the river 's name , is most likely derived from the green soapstone in some of its banks .
