Table tennis ball

This is table tennis ball game,and playing game by your own left hand and right hand.
Ball speed will be faster and faster.
See how much time you can keep.
There are 4 ways to play:
1. Left bar and right bar to impact that ball, do not let the ball out of screen bounds.
2. There are 4 balls to run, do not let the ball hit bar.
3. There are 10 balls to run, do not let the ball hit left bar and right bar.
4. Left bar and right bar to impact 2 balls, do not let the ball out of screen bounds.