Guardian Angel

I was walking on a street with my friend when I was stopped by an old man. He did not ask much and started to explain that he is a guardian angel of tourists and foreigners in Chandigarh. He showed a couple of years old article from the newspapers and his notebook where all the foreigners he met wrote something in their own language.
This is the article:

http://timesofindia.indiatimes.com/articleshow/40739486.cms