This is a very personal and very emotive subject.
Many marital problems in Western society stem from disagreements about money, add to this the cultural difficulties of language and different financial customs and you can get into a mine field.
I realised early on that this was primarily a matter of security. Our house is in joint names and we have a joint bank account and credit card. My wife does not work, but I do so effectively all the money in the joint account and paying the mortgage is mine. When things were better than currently I gave her an allowance so that she had her own money but that is not possible right now.
We both have our own savings accounts and property as well as the joint ones and this has proved not to be an issue. The only real fight we had was when I blew a lot of money in Macau one weekend - enough to buy a couple of nice handbags - I'm man enough to admit this was foolish.