What is the material of Mrs. Bao Wenling's filial piety workshop in Tang Yue Paifang Group?

Bao Wenling's wife, Jiexiao Square, is made of tuff and built in 1784. It is a three-story four-column arch with a width of 8.75 meters and a height of about 1 1 meter. It is the fifth square of Paifang Group from west to east. The east side of the card reads "filial piety" and the west side reads "completion festival" and other big characters.