What does it mean to put the ring on the index finger?

I want to get married on the index finger, but it has not yet been married.
This jewelry, after thousands of years of wind and rain baptism, is now generally accepted by people, and in modern life, it plays a small role. Either as a decoration, or a token of marriage, or purely used for wealth. It is this common accessory, but people do not seem to have many research on it, but they are scattered in books and customs.
"The Ring" of the "Examination of Ancient and Modern Things" in Wang San's series: "The Multi -Righteousness of the Five Classics" said 'The ancient concubine group of the concubine and the emperor, as the imperial person, entered it with silver, and the pregnancy was used to use it to get the pregnancy. Golden Ring retreats, the entry is on the right hand, and the retirement is on the left hand. The three generations of the three generations, that is, today's generation finger. "
extension information:
On the thumbs -generally do not wear diamond ring;

2, index finger -want to get married, indicating that it has not been married;
3, middle finger -indicating in love;
4, unknown finger - - Indicates engaging or married;
5, wearing on the little finger -indicating that it is single or divorced.
Reference materials: Baidu Encyclopedia-Ring-Ring's Portal

Wear the index finger indicating single.
The ring is generally worn on the index finger indicating single; wearing on the middle finger represents is in love; wearing on the ring finger represents the engagement or married;
In according to the habits of our country, the engagement ring is generally worn on the middle finger of the left hand. The wedding ring is worn on the left hand; if it is an unmarried girl. It should be worn in the middle or ring finger of the right hand.
The expansion information:

Neplifier:
1, bathing, shampooing should not wear ring:
Cleaning is cleaned, which will lead to a large amount of bacteria breeding. On the other hand, strong acid or alkaline cleaning solution such as shower gel and shampoo will corrode the ring.
2. Sleeping should not wear rings:
long -term wearing rings will affect the blood circulation of the finger. Poor blood flow will cause mild puffiness of the fingers, and a dark mark will appear serious.

3, should not wear rings after pregnancy:
The ring size of the ring is generally fixed. If the ring is not removed in the early stages of pregnancy, it will be difficult to remove it in the future.
Reference materials: ring (finger wearing decorations) _ 百度 贴 吧

If it is the promise
, do not wear it on the index finger
ring the ring on the index finger represents a cynical attitude of life