1. What's for dinner?
Not every foreigner is a fan of Chinese food. Many people can't stand the grease and smell of Chinese food. What does that mean for inter-racial families between Chinese and non-Chinese? Two different sets of plates on the dinner table which could be troublesome sometimes.
2. argument
It can be tricky for Chinese marrying foreigners, especially if neither party speaks each other's native language. I've heard of couples arguing on paper in stead of having oral fights, or using children as translators in the fights. Communication can be quite challenging for couples from different cultural and language backgrounds.