What are the doors of ancient gatehouses?

Generally, there are door frames, door heads, door leaves, door nails, door piers, door knockers and door nails.

In ancient times, the so-called "door to door" refers to the door needle on the ancient gate, so the door needle is also graded, marking the identity of the head of the household. The number of "household pairs" shows that the title of the owner can be one to five grades six, six to seven grades four, other small officials or ordinary big families two.

The door hairpin has a variety of shapes, and the front is carved or painted, decorated with patterns or patterns of rare birds and animals. There are often words such as "Chunlan Summer Lotus", "Autumn Chrysanthemum and Winter Plum", "Good luck", "Fu Lu Shou De" and "Peace in the world". When there are only two doornails, the word "auspicious" is engraved.