Culture
Shaking hands is a common greeting. In northern parts of the country, when greeting an elderly person, you have to kneel and give them both of your hands if they are seated. If they are not seated, just bow slightly and offer your two hands.
Once you have made a friend, a handshake upon meeting may turn into holding hands for the duration of the conversation.
Most people generally don’t mind talking to a person very close to them, but usually keep a distance of an outstretched arm’s length from each other.