Kowtow is one of Japan's ceremonies.
When someone is apologizing for the senior partner and do it when asking for forgiveness.
It is said that it is a custom from Japan and that the beginning dates back to Yamatai dynasty.
In the Edo period, people were allowed to obtain the permission of the opponent by making a subordinate position against the other party.
At the time of election, candidates may often sit down to vote for voters.
However, some people seem to take the action of tsukiza as funny.