How and where can I purchase the Multi-Pass for the subway. I will be in Guangzhou from 11 Jan till 17 Jan 2014.

There are two kinds of package tickets, one-day pass and three-day pass.
The one day pass is valid within 24 hours since it was put into use and the three-day pass is valid with 72 hours.
You can buy the ticket at most of the subway stations in the city downtown area such as the East Railway Station, the Railway Station, the Airport South Station, the South Railway Station, the Jiaokou Station, the Tianhe Coach Station, the Gongyuanqian Station, the Chigangta Station, the Yuexiu Park Station, the West Tiyu Road Station and the Zumiao Station.