I plan to visit Pobai county in Guangxi and ZhongShan in Guandong.
My father told me, Pobai is a small county and he was born there. My mother was born in Zhongshan, Guandong. I would like to visit their rooted areas. I have never been to the Southern part of China. I will have a business trip to Hongkong, I plan to use this opportunity to visit the two places, but I only have about a week after my business meeting. I need help to plan for the trip and way to use my time effectively. Please advise what is the best route, transportation, and hotel to visit to the two places from Hong Kong?
Your help is greatly appreciated.

Sincerly,