If we have large luggage can still use the ferry? where do we go traveling from Shenzhen to HK?

You need to take the ferry at Shekou Port. One person can take one piece of luggage free of charge, and it shall not exceed 10kg. The second piece of luggage must be delivered.
In addition, one person can totally have two pieces of luggage delivered, every 10kg or below of the checked luggage is taken as one charge unit, and each unit is charged 20 yuan only.
When delivering luggage more than two pieces, every 10kg or below is taken as one charge unit, and each unit is charged 40 yuan only.Hope helpful!