Where are you in Guangzhou? If you want to go to Chaozhou by high-speed train, you should take a seat at Guangzhou South Railway Station! ! You can take Guangzhou South Railway Station by subway.
High-speed railway station in Chaozhou is not called Chaozhou, but Chaoshan. It is located in Shaxi, Chaozhou, which is an hour&;s drive from downtown Chaozhou.
You can either buy tickets online, or you can buy tickets at the ticket vending machine at the back of Guangzhou South Railway Station ~ ~ ~