i will travel from hong kong to shenzhen in december

Hi, the best way should be take the cross-border coaches to your destination. You can catch the buses at Hong Kong Airport, Wan Chai, Jordan and Kowloon of Tsim Sha Tsui.
You will get to SZ Bay by coach and then you can walk to Wanxia MTR Station to take subway Shekou Line to Window of the World (WOW). After that, you need transfer to bus no. 43 and get off at Chunyuan Lukou Station, which is only about 200m or a little further from the university city.