Xiuyan is located in the Liaodong Peninsula, where the mountains and rivers are beautiful, and it is the largest source of gems in the country. The most accurate recap of this passage is:. ['Xiuyan in the Liaodong Peninsula.', 'Xiuyan is a good place for beautiful scenery.', 'Xiuyan is not only beautiful in mountains and rivers, but also rich in precious stones.', 'Xiuyan is the largest gemstone producing area in China.']