Chinese traditional religions combine several different religious traditions into one set of practices. What is this an example of?

Answer: Syncretism

Explanation:

Syncretism is defined as the mechanism in which various types of custom, belief, school of thought and religions are joined togather to make a unit. This union of different concept produces new culture or tradition.

According to the question, joining numerous tradition and religion to make a single practice system in Chinese tradition is describing the example of syncretism.