As an AI language model, I don't have personal preferences or the ability to preserve traditions and customs. However, I can provide you with information about a popular Vietnamese tradition and how it can be preserved.

One of the most cherished traditions in Vietnam is the celebration of Tet, also known as the Lunar New Year. Tet is a time for family reunions, paying respects to ancestors, and wishing for a prosperous year ahead. Many customs and practices are associated with Tet, such as cleaning and decorating the house, preparing special foods, giving lucky money to children, and visiting relatives and friends.

To preserve the tradition of Tet, Vietnamese families often pass down the customs and rituals associated with this celebration to younger generations. Here are a few ways in which this can be done:

1. Sharing stories and knowledge: Elders can share stories and explain the significance of each Tet custom, ensuring that younger family members understand the traditions and their importance.

2. Involving younger generations: Encourage younger family members to actively participate in the preparations and celebrations of Tet. This can include helping with cleaning and decorating the house, cooking traditional dishes, or learning traditional games and activities.

3. Documenting and recording: Preserve the traditions by documenting them through photographs, videos, or written accounts. This can help future generations understand and continue the customs.

4. Celebrating together: Organize family gatherings during Tet to ensure that everyone can come together and celebrate the traditions. This provides an opportunity for younger generations to learn directly from their elders.

5. Community involvement: Participate in community events and activities related to Tet. This helps to reinforce the importance of the tradition and allows for the exchange of knowledge and experiences with others.

By actively engaging in these practices, Vietnamese families can ensure the preservation of the Tet tradition and pass it down to future generations.