Here is an interesting analysis of the origins of Taiwan's hybrid culture.
Regarding Taiwan's background religious culture, I was reading from the book of Jeremiah this morning and noticed a chapter describing the prophet Jeremiah's interaction with the Jewish exiles in Egypt. Their worldview of idolatrous pragmatism seems to very much capture traditional Taiwanese religious experience. So go read Jeremiah 44 and 45.
The answer to that worldview can be found in Psalm 49 and Psalm 73.
Please pray for Taiwanese to come to the wisdom that the Holy Spirit teaches in the Psalms.