Chinese culture has a long history and continuously spreads worldwide. Min-nan culture plays an extremely important role with respect to the relationship between Chinese and overseas culture. This paper focuses on three genealogy books of Chinese Vietnamese who emigrated from Zhangzhou, China.These three books contain little known patterns of emigration from Zhangzhou to Vietnam. The collection and in-depth research of these precious and rare documents help us broaden the understanding of the connection between Chinese, Min-nan and overseas culture, as well as enrich research of immigration culture all over the world.