对异族通婚的情况，是怎样的条例？

For the purchase of an HDB flat, a household with members of different ethnic groups can choose to classify their household ethnicity under the ethnic group of any owner or spouse (co-owner or occupier), according to the race shown on the NRIC of the chosen member.

Once an ethnicity is chosen for the household, it will remain the same when the flat owners subsequently sell their flat on the open market.

优势非常大
但是卖的时候问题也大啊

听说分布大概如下：
印度人 + 其他 ~10%
马来人 ~15%
华人 ~75%

不过不同地区好像又有不同分布， 不过差不远。
买卖时通常都会卖回给同样族群的人，这样才能保持比例。