The husband and the wife should keep his or her own surname. Unless one party shall prefix to his or her surname that of the spouse in writing at the household administration authority.
The party who prefixed to his or her surname that of the spouse shall return to his or her own surname. But only one time for change during the continuance of the marriage relationship.

The husband and the wife are under mutual obligation to cohabit, unless for a good cause they cannot live together.

The domicile of the husband and the wife shall be agreed by mutual agreement; if it has not been agreed or can not be agreed, it may depend on the court by application.
Before the ruling of the court, it will be presumed the common household domicile as the domicile of the husband and the wife.

In daily household matters, the husband and the wife act as agents for each other.
Where one of the parties abuses the aforesaid right of agency, the other party may restrict it, but such restriction cannot be set up against any bona fide third party.

The payment for living expenses of the household will be shared by the husband and the wife according to each party's economical ability, household labor or other conditions unless otherwise provided for by law or mutual agreement.
The husband and the wife will be jointly liable for debts incurred by the expenses of the preceding paragraph.