about how i can come from k105 station (the train from beijing) to the nearest subway station

Hello and respect
i come and arrive to shenzhen by k105 ( the train from beijing) at 5:02 am 20 April and next i,d like come to convention and exhibition center (cmef fair) so please lead me how i can transfer from the shenzhen rail way station to this fair by metro
the best regards
ali from iran