Zhao Zhouqiao is connected with the Pearl of the Northwest.

The role of connecting the preceding with the following. According to the data of China Literature Network, the text of Zhao Zhouqiao is written around the first sentence: "Zhao Zhouqiao is not only powerful, but also beautiful", which is a transitional sentence of the full text and plays a connecting role. The transitional sentence between the Pearl of the Northwest and the Mogao Grottoes is: "The Mogao Grottoes not only have vivid colored sculptures, but also have magnificent murals of more than 45,000 square kilometers", which plays a connecting role and is also the central sentence of the third natural paragraph.