I am coming from Shenzhen Luohu to Guangzhou Airport CAN

My friends told me: i can take the high speed train from Luoho Shenzhen to Guangzhou East (takes about 1 hour and 15 minutes)
and from there, i can take the subway line3 to go to the Airport . is that right?
which airport station is for departure of Emirates Airlines (Airport North Station or Airport South Station)?
What is the duration of the subway from Guangzhou East to the Airport Subway station?

thank you