People's index finger has different functions in different people.

For a baby, his index finger is like a mother's breast, something that can be sucked or even "eaten".

For a smoker, the index finger can only be used to play cigarette ash.

For diligent people, the index finger is the key to achieve their goals. Teachers use it to point out words, soldiers use it to pull the trigger, farmers use it to choose improved varieties, and workers use it to press buttons.

Some people also say: wearing a ring on your index finger feels like a beautiful woman with personal opinions!

Others think that wearing a ring on the index finger is "gay"