Cross Gate Tunnel (Metal Cement Panels) is a tunnel located in the Cross Gate Central Business District of Xiangzhou District, Zhuhai City, Guangdong Province, China, connecting Wan Chai Area to the financial island of Hengqin Area, which is the fifth land passage connecting Hengqin Island and the third highway submarine tunnel connecting Hengqin. The project is invested and constructed by Hengqin Guangdong-Macao Deep Cooperation Zone, built on behalf of Zhuhai Huabao Development and Construction Company, and constructed by Shanghai Tunnel Co. 2.7 billion yuan.