When you click on Withdrawal in Paypal, it will tell you how many days it will take. For me in Singapore, it takes about 5 working days
1 G6305 train, departing at 09:00 and arriving at 09:30, 30 minutes' duration, from Guangzhou South Railway Station to Shenzhen North Railway Station.  You are recommended to choose a train for which you can arrive at the train station 2 hours before its departure.
2. Badaling Great Wall Train Station. The train is quite under-utilized, thus you do not need to book the ticket in advance. You can purchase return tickets from Beijing North Railway ticket booth. S2 has an exclusive ticket booth, which is on the way from where taxi usually drops you off to the station.