Myfamily will be visiting Hong Kong-Shenzen on back-packing concept in April 11,and plan a night stay in Shenzen Dongmen area prior to departure back to Kuala Lumpur via Shenzen I/N Airport,the following evening.Beside WOW and window shops on the first day, we plan to go to happy valley the next day.If we have 5 hrs only to spare,is it ample and worth going?.If possible how do we go about?.How far KFY rest.from say Holiday Inn Express or nearby hotels .