Nina and Hong wrote their own vows which wowed everyone, most importantly each other.

Remember a vow is a promise and the marriage ritual is built around the ancient rite of "pledging your troth" in other words solemnly promising to be faithful to one another. It is essential that oath of fidelity, said in your own words from the heart is contained within your vows. Then you are free to have some fun with the other words you say to each other while maintaining the essential meaning of the marriage.

"troth [trəʊθ]
n Archaic
1. a pledge or oath of fidelity, esp a betrothal
2. truth (esp in the phrase in troth)
3. loyalty; fidelity
[Old English trēowth; related to Old High German gitriuwida loyalty; see truth]