I am a citizen of one of the countries (France) eligible for a 144-hour visa-free transit in some areas of Mainland China. I understand that to be granted the visa-free entry, I must have an onward ticket to a destination that is different from where I came from when entering Mainland China.
I am trying to understand the permissible exit ports when entering Guangdong Province via one of the permissible entry ports. china-briefing.com states that there are 32 admissible exit ports in Guangdong Province (land, sea, and air). I found the list of these 32 ports on fruitexpo.cn (formatting is mine):
The 32 ports in Guangdong Province are:
five airport airports in Guangzhou Baiyun, Shenzhen, Meizhou, Zhanjiang and Jieyang Chaoshan;
four railway ports in Guangzhou Tianhe, Dongguan Changping, Foshan and Zhaoqing;
eight highway ports in Shenzhen, namely Wenjindu, Shatoujiao, Huanggang, Luohu, Shenzhen Bay, Futian, Zhuhai Gongbei and Hengqin;
and a total of 15 ports and harbours, including Guangzhou Harbour, Nansha Harbour, Lianhuashan Harbour, Shekou Wharf, Shenzhen Airport Supporting Terminal, Jiuzhou Harbour, Wanzhai, Wanshan Harbour, Doumen Harbour, Jiangmen Harbour, Heshan Harbour, Foshan Gaoming Harbour, Shunde Passenger Harbour, Zhongshan Harbour, and Dongguan Humen Port.
What's the Luohu highway port in Shenzhen? I am familiar with the Luohu port at the Luohu station, but I don't recall any highway there: travelers are just crossing the border by foot, typically after/before taking the train on the Hong Kong side.
I also don't see any mention of highways on the Wikipedia page about the Luohu port:
It is served by Shenzhen railway station of the Guangshen Railway (formerly the Canton-Kowloon Railway Chinese Section), and Luohu station of the Shenzhen Metro, whereas its counterpart in Hong Kong is interconnected with Lo Wu station on the East Rail line, formerly the Kowloon-Canton Railway British Section.