What celestial phenomena did Zhuge Liang see in Wuzhangyuan before he died?

This is described in the Romance of the Three Kingdoms. After seeing the celestial phenomena, Zhuge Liang said anxiously to Jiang Wei, "Of the three stars I saw at night, the guest star was brighter and the main star was darker, which brought out the best in each other. Its light is dim and my life is not long. " If you want to explain this sentence, you must explain the two key words "three stars" and Zhuge Liang's talk about the main star.

Santai Qi Xing is located in the northeast corner of Taiweiheng, connected with Ziweiheng, and becomes a chain connecting the two immortals. In ancient China mythology, Ziweiheng was the place where the Heaven Emperor was located, and Taiweiheng was the place where the Heaven Officer was located. Tiandi can follow this connecting channel from Ziweiheng to Taiweiheng. In ancient times, there was a divination method called "Tailiu Jiefu", which was a method of dividing six levels with three stars.

Ancient fortune tellers divided the three stars into three parts according to their small positions: upper, lower and middle. The upper and lower stars of these three parts have their own masters, with the upper star corresponding to the son of heaven and the lower star representing the queen; The middle-ranking upper star corresponds to the vassal, and the three kings and the lower star correspond to Dr. Qing; The upper star of the lower rank represents the gentry and the lower star represents the people. So at that time, Zhuge Liang should have seen that the upper star in the middle order was extremely dark, so he felt uneasy.

At that time, it was just an overly artistic plot in The Romance of the Three Kingdoms. In fact, Zhuge Liang suffered from digestive system diseases or cardiovascular and cerebrovascular diseases very early. However, since Zhuge Liang joined again, life has not been particularly regular, which has aggravated his illness. In addition, Liu Adou got support later, which made him overworked, aggravated his illness, and finally died.