Xinhua give news China Railway 14th Bureau Group  start construction Zhujiangkou Tunnel.  In Guangdong-Hong Kong-Macao Greater Bay Area key transportation project of China Railway Construction Corporation. It finish after 56 month.

Tunnel in new 116 km Shenzhen Railway. Tunnel is 13.69 km. One bore two lane. 12.9 m diameter. Underwater maximum 115 meter deep. Deepest underwater tunnel in China maximum water pressure.

http://big5.xinhuanet.com/gate/big5/www.gd.xinhuanet.com/newscenter/2020-07/05/c_1126197278.htm