To greet with a handshake. Should hold each other tight Because it was not just a handshake and polite. And should be exchanged with the other party during the handshake because it was considered an homage to it.
In the salutation by the hand should shake hands firmly clasp the other end just because the light they do more and more sides with eyes should be in hand because they are considered as showing respect.
In the greeting with the other hand should be holding hands tightly holding hands just because the light is not polite, and should be met with another party during the hand because it is out of respect.