Ports to HongKong in Shenzhen

There are five ports from Shenzhen to Hongkoong, Luohu port, Huanggang port, Futian port, Shatoujiao port and Shenzhen wan port. Luohu and Huanggang port are the most busy one.  Among them, Luohu and Huanggang ports both have train to Hongkong. It's about 50 minutes way.