Just a few questions: 1. Is the subway train which goes from Hong Kong to Shenzhen safe for two women traveling alone. 2. Will we have much trouble traveling between the two place with a suitcase each? 3. Is this route used for people traveling from outside of China (USA)as tourists or mostly by people who already live there? Also will I have trouble doing this not knowing the language? 4. Is there staff available who knows and speak English who will be there to assist us and answer our questions so we will not get lost? Thank you in advance and have a great day! Sorry to ask so many questions at one time!!