Use of Octopus Card on Shenzhen Metro

We will be entering SZ from Hong Kong through Lo Ma Chau. After we clear the Chinese immigration at the Futian Checkpoint, can we use our Octopus card to get on local metro? Or do we need to buy a new ticket. If we do need a new ticket, how do we buy it given we are English speakers? Where is the Line 4 metro station in relation to Futian Checkpoint? We are trying to get to the Futian Station to catch a high speed train to Beijing and we will have two large pieces of luggage.