macau to guangzhou by high speed rail

You can go through the immigration check at Portas do Cerco and then walk to Zhuhai Railway Station. From there you can take a high speed ride to Guangzhou South. The ticket price is CNY70 for second class seat and CNY90 for first class seat. There are many rides a day, you can buy it at the station after your arrival or you can book it online in advance via a booking agent like this one.