There are direct shuttle bus at Exit 7, arrival Hall of Guangzhou Airport to Zhongshan (Dongyu Rd). It costs about 70RMB. Then take a taxi to the industrial park. For the second question, are you leaving from HK airport to Zhongshan? If from the city center of Hong Kong, where. If from the airport, there are ferry and shuttle bus to Zhongshan. It costs about 250HKD.

Thanks Mr. Jerry, I had a wonderful time in Zhongshan, Guangzhou, and Hong Kong. As a history buff I particularly loved having pics of the Dr. Sun Yat Sen Memorial Park in Zhongshan. I love this city!

P.S. I have another question ~ my next travel itenerary next month would be from Zhongshan to Guangzhou to Beijing/Tianjin to Tangshan City, Hebei. Any tips on the most convenient way to go there? I want to know the way via airplane, bus,train, or ferry. Xiexie :)

Well, take a bus from Zhongshan to Guangzhou, then fly to Beijing. From Beijing, you could take a bullet train to arrive in Tianjin in 30 minutes. Afterward, a train will take you from Tianjin to Tangshan in 1.5 hours.

Xiexie Mr.Jamie, I have another question. Is there a direct trip via airplane or train from Guangzhou to Beijing or from Guangzhou to Tianjin? Which is cheaper - travel by plane or by train? Your reply would be highly appreciated.

Hi, both of train and flight are supplied from Guangzhou to Beijing, or Guangzhou to Tianjin. Of course, a hard-sleep train ticket is much cheaper than taking a flight. However, it will take you much longer time. And, I think it is difficult for you to purchase the train tickets before the coming Chinese Spring Festival. The train and flight info could be searched respectively at:
https://www.travelchinaguide.com/china-trains/
https://www.travelchinaguide.com/china-flights/

Xiexie Mr. Jamie! Your prompt reply is highly appreciated! Thanks and advanced greetings of a Happy Chinese New Year!