What is the white shed next to Zhangye Expressway?

Planning toll stations or expressway service areas. The canopy section of the expressway is not a tarpaulin structure, nor is it a canopy used to shelter from rain. At least it is a Dapeng with steel structure, and then there is a package on it, usually an aluminum-plastic plate, which is generally used to plan the toll station or expressway service area in the later period. Zhangye city, known as Ganzhou in ancient times, is a prefecture-level city under the jurisdiction of Gansu Province, located in the northwest of Gansu Province and in the middle of Hexi Corridor.