What is the shelf for storing ancestral memorial archways in ancient ancestral temples?

Not a shelf, is it? Usually a mystery.

Guangdong calls it "Shengtai" (Shengtai), mostly made of wood.

Most of Hunan's are directly hung on the wall.

Traveling in the north, I found that most of them were placed on a table, just like the "mystery case" in Guangdong.

There is half a table in Jiangxian area, which looks like it is embedded in the wall.

Lu Xun's novels call it "offering a watch".

The same is true of "Taiwan Province".