You don't have to transfer to Guangzhou-Shenzhen-Hong Kong high-speed rail in Guangzhou, which will make you more troublesome. Guangzhou-Shenzhen high-speed rail can only go to Shenzhen North Station, and you have to transfer to the subway from Shenzhen North Station to Luohu Customs.

I suggest you take a long-distance bus from Foshan to the West Square of Shenzhen Railway Station. Shenzhen Railway Station is connected with the buildings of Luohu Pass, that is to say, the train station is equivalent to the Luohu Pass in Shenzhen.

I suggest you travel freely, and provide you with a route guide for your free travel for reference:

< The first day > :

Pass through Shenzhen Luohu → take the East Rail → get off at Hung Hom Terminal → visit Tsim Sha Tsui → visit Tsim Sha Tsui Seaside Garden → visit the Avenue of Stars → walk to Tsim Sha Tsui Star Ferry Terminal → cross the Victoria Harbour → take the cable car (cable railway) → go to Taiping Peak → Madame Tussauds Wax Museum → visit? Peak tower →? Visit the old pavilion → take the cable car downhill → it's up to you to visit other scenic spots → take the Hong Kong tram → get off at Causeway Bay → visit the Hong Kong Convention and Exhibition Center → visit the Golden Bauhinia Square → after dinner → visit Victoria Harbour at night → return trip → stay in the hotel → Good night!

Hong Kong self-help tour

/question/248844867.html? Oldq=1

Please refer to my blog Hong Kong-Hopewell Center, Hong Kong Customs-Sham Shui Po, Hong Kong Taiping Mountain, Hong Kong Aberdeen, Hong Kong Food Paradise and Hong Kong Tsim Sha Tsui

/%B9% E3% B6% ab.