Meera is giving a speech on a cause she really believes in: providing drinkable water to third world countries. each time she makes a point, she smacks her fist into her palm for emphasis. is this the correct use of gesture in a speech?

No. Rather than using a single gesture throughout the communication, it is better to employ a variety of gestures. This will help her to engage the audience better and communicate her points in a manner that the audience will easily understand

it teaches readers about an interesting chinese custom and causes them to determine that the minister is trying to be polite

can you explain it better