It is the smaller twin of the Hall of Supreme Harmony.

它是太和殿小一号的孪生弟弟。

youdao

The emperor would arrive at the Hall of Supreme Harmony amidst ceremonial music, drum-beating and firecrackers.

皇上会在一段正式的乐曲，和炮竹击鼓声中步入太和殿。

youdao

Below are two views of buildings to the side of the hall as seen from the raised platform that the hall of Supreme Harmony sits on.

下面这两张图片是站在太和殿的巨大的基石平台上看到的两边的风景。

youdao

The Hall of Supreme Harmony is the palace's biggest and most important structure.

BBC: Beijing's once Forbidden City

The Hall of Middle Harmony was a kind of backstage area where the emperor stopped to compose himself and consult with ministers before entering the Hall of Supreme Harmony.

BBC: Beijing's once Forbidden City