There is a large square between the Meridian Gate and the Gate of Supreme Harmony. Guards of honor would line up in this square during important ceremonies.
The Palace of Heavenly Purity was where the Emperor attended to state affairs daily.
The Hall of Union & Peace kept 25 jade seals of the imperial court that represented the authority of the monarchy. Those jade seals were placed in golden boxes covered with yellow silk.
This chamber served as the bridal chamber for the Emperor & Empress. During their wedding, they stayed here for 3 days together, then return to their respective residences.
In the Inner palace there are many other buildings: The Palace of Peace & Longevity, the Palace of Benevolent Peace, the Hall of Mental Cultivation, six east halls and six west halls.
The Emperor could have as many wives as he liked. The Emperor also kept > 3,000 pretty girls in the Inner Palace. These palace girls were not allowed to go out or to see their parents, not allowed to have any affair or marriage. Their whole lives were wasted - waiting for the Emperor's pleasure.
There are many stories about these beautiful girls. Some are very sad, some are exciting. Can you imaging? - One of them was clever enough to became the Emperor herself.
Also there were thousands of male servants in the Inner Palace. However their male organs hadto be operated on before they went in there. (That might be the earliest sex-transition.) These servants had a special name: TaiJian. Some TaiJian had huge power because they were very close to the Emperor.