After topping up our student cards (which is also our ezlink), we were finally able to explore other parts of seoul by bus and train. We visited Dongdaemun which is really a shopping haven for both koreans and foreigners; the Seoul Olympic Stadium to catch dbsk's concert (we didnt have the tickets so we could only hang around the place to feel the atmosphere... haiz) and finally settled our alien registration. All foreigners residing in Korea for more than 90days are required to apply an alien ID.
On the bus and train...
There are 8 subway lines in Korea and dozens of interchange stations to transfer, so it gets rather confusing for foreigners to travel around. And it gets really crowded during peak hours so you wont even need to walk into the carriage as there will be people behind pushing you in. And also, there's seats on every carriage specially reserved for the elderly, disabled and pregnant ladies. Its the protocol that you give up your seats for them or you will be scolded/hit on the head by them, especially the aunties and uncles who are known to be very fierce. Haha.