What do you mean by tianyi?

Tianyi has two meanings. One refers to Cheng Tang, the founding monarch of Shang Dynasty, and the other refers to the official name of the constellation, which is also the name of the constellation. The specific meaning is as follows:

One refers to the founding monarch of Shang Dynasty. The ancient book says "seven soups". Records include: Tang, Wu Tang, Shang Tang, Tian Yi, Tian Yi Tang. One of them is the name Tianyi.

Second, it refers to the official name of the star. Tianyi is also called Tianyi, which is a folk honorific title. It is recorded in the Star Classic: "Tianyi Star is outside Wei Zi Palace, and the right star is in the south." In ancient legends, Taiyi is the most important of the three gods, followed by Tianya and Diyi. Today's Lantern Festival is a traditional festival to worship heaven. During the period of Emperor Wu of the Han Dynasty, sacrificial activities were scheduled for the 15th day of the first month.

Three-finger days are the names of stars, and so is Taiyi. Very close to the right axis (a star in Draco), but not bright. Stars don't move. Tianyi and Taiyi are very weak. In fact, we can't really know which two dark stars the Han Dynasty is talking about.

Sima Qian's so-called zhonggong is the celestial area near the celestial pole. The celestial pole star in this sentence refers to a star official. The so-called star officer is a combination of several stars similar to western constellations. Tianxingguan, also known as Beichen, does not refer specifically to Polaris, but refers to the combination of five stars.

Among the five stars of Celestial Star Officer, the brightest one is the place where Taiyi God often lives, and it is the second star of this star officer, which is also called Arctic II in later generations.