The last tunnel of the Pearl River Delta water resource allocation project has been fully bored, marking the completion of all tunnel construction, according to the Ministry of Water Resource.

The project is intended to solve water shortages in the cities of Guangzhou, Shenzhen and Dongguan, and to provide an emergency supply for Hong Kong, thereby benefiting an aggregate population of 30 million people. The construction project began in May 2019 and is expected to be operational by the end of 2023.