This project lays the foundation for information communication in China and plays a key role in information technology, which enhances the ability of information communication and meets the information development needs of China. This project is relevant to SDGs 3, 8 and 9. Atu Lie'er Village, located in Zhiermo Town, Zhaojue County, Liangshan, Sichuan Province of China is called the "Cliff Village", as its more than 500 villagers live on a cliff, where the traffic conditions are very bad and villagers need to climb nearly 800 metres if they go outside of the village. China Telecom Liangshan Branch and Zhaojue Branch overcame traffic difficulty and conducted network investigations there in September and November 2015.