There is a bell and drum in it, corresponding to the bell and drum tower, which is used to start the shift. But when the emperor lived in the palace, the bell on the Shenwu Gate stopped ringing. As the back door of the imperial palace, Shenwumen is an important entrance guard for the daily entrance and exit of the imperial palace. Empresses in the Ming and Qing Dynasties kissed silkworms through this door. When the Qing emperor returned to the palace from Jehol or Yuanmingyuan, he often entered the palace from this gate. This door is also a special door for empresses and members of the royal family to enter and leave the palace. When the emperor is on patrol, he can leave the palace through the meridian gate, but the accompanying concubines must leave the palace through the Shenwumen. If the emperor serves the empress dowager out of the palace, they will go out of the Shenwumen together.
1924, Puyi was expelled from the palace and left this door. The plaque "Palace Museum" above the door was inscribed by the famous historian Guo Moruo in 197 1 year.
Extended data
At dusk, the bell tower of Shenwumen rang 108 before "getting up". At that time, one night was divided into five watches, also known as five nights or five drums. A shift lasts about two hours. Every time "on duty", the flag drummer will beat the drums until the next morning, when the duty is over and the morning bell rings again, which is also 108. The same is true of the bell and drum tower in the north of Di 'anmen, so there is a saying of "morning bell and dusk drum" in ancient times. But when the emperor lived in the palace, it was stipulated that the Shenwumen would no longer ring bells.
The total height of Shenwumen is 3 1m, and the plane is rectangular. The base is a white marble sumeru, and the city platform has three tickets to open the door, and the tower is built on it. The building is based on white marble, 5 rooms wide and 1 room deep, surrounded by cloisters and white marble railings. Open the front and rear eaves of the building and the doors between the left and right, and the rhombuses are separated by the doors.
The east and west mountains are equipped with double-plate doors, connecting the city wall and the left and right roads. Poke around the door. The building is a double-eaved roof, the lower floor is a single-inclined, single-upturned five-step bucket, the upper floor is a single-inclined, seven-step bucket, and the beam is decorated with a large gold spiral painting with ink lines. There is a gold-plated bronze character hanging on the eaves with a blue background, and a plaque is covered on the Chinese "Shenwumen". Covered with yellow glazed tiles. The roof is the ceiling of Trollius chinensis, and the ground is covered with gold bricks. Shenwumen faces Jingshan.
Refer to Baidu Encyclopedia-Shenwumen