Here's a sample essay on your topic http://logosacademydebate.blogspot.com.au/2011/01/romantic-love-is-poor-basis-for.html

Write about what you know about marriage customs in Taiwan.

Here is a sample essay about marriage http://www.123helpme.com/view.asp?id=76354

I think you need to add more detail... Because you haven't said what type of essay and not much detail about the topic :)

Start with a funny quote: "How can a woman be expected to be happy with a man who insists on treating her as if she were a perfectly normal human being." - Oscar Wilde Then elaborate on it from there.