Let me show you. Look, at first place both sticks between the thumb and the fore finger, then, keep one still and move the other, so as to make them work like pincers.

先让我给您示范一下。您看，先把两根筷子放在大拇指和食指之间，接着固定这根再移动另一根，这样就可以使用它们像钳子一样灵活了。