2. If there is no evidence to prove it, it is considered as premarital property.
Husband and wife have joint property and personal property. These two concepts can be written into a paper.
If it is very important, I suggest you look up these two concepts in the encyclopedia.
Distribution of property after divorce.
First of all, premarital property is premarital property no matter how long it takes, and it belongs to one of the husband and wife, so it doesn't need to be divided when divorced.
Secondly, to define whether the property you are talking about is pre-marital property, you need to provide effective evidence to prove it.