Vietnamese people burn in __ to show the respect to their ancestors during Tet.

The question refers to a traditional practice observed by Vietnamese people during Tet, the Lunar New Year, which is a significant holiday in Vietnam. This practice involves burning incense as a way to show respect to ancestors. The blank in the question should be filled with the word "incense" to accurately complete the sentence. This practice is deeply rooted in Vietnamese culture and traditions, where it is believed that burning incense helps guide the spirits of the ancestors back to their homes during Tet.