What does "Xuan Ji" mean?

The Great Biography of Shangshu said: On the first day of the first month, I finally arrived in Wen Zu and in Yuheng, Xuan Ji, in order to unify the seven houses. What is this? It is said that the sincere person is also, and the sincere person is also a little bit for a few things, and becomes a little bit, and the actor is big, which is called Xuan Ji. Therefore, Xuan Ji is called the North Pole.

Now there is another product called Xuan Ji Network Computer.

Good emerald

Two stars of Beidou, such as Xuan Handle (Beidou bucket handle); Dear star (star name. Beidou two stars); Xuan Shu (Xun Shu). Star name. Beidou has one star as its pivot and two stars as its grace. Generally refers to the Big Dipper; Also metaphor hub, key)

A pearl that is not round.

Wen Yang and Tian Ji. -"Wensong Emperor Yuan Empress's Funeral Policy"

Another example: Ji Xuan (the star name in the Big Dipper). Xuan is two stars, Ji is three stars, now called "Tianji", collectively called "); Ji Heng (star name. Tian Ji and Yuheng in the Big Dipper. Also used as an instrument for observing astronomy)

Ancient astronomical instruments

An ancient astronomical instrument, the armillary sphere.

It is wonderful to be the right machine. -"Zhang Hengchuan"

The first to fourth stars of the ancient Big Dipper.