Why is Table Tennis called Ping Pong?

TavFact, Table Tennis

In the original rules of Ping-Pong, the ball had to bounce on your side of the table before going over the net after you hit it. In modern day Table Tennis, the ball must be hit directly over the
net onto the opponent’s half of the table; it is this extra bounce that gave the game the 0nomatopoeic name. ‘Ping-Pong’ was also the trade name for the table tennis sets originally sold to promote the game.

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