Which is Zhuge Liang's "general star"? How did Sima Yi know that his life would soon end?

Zhuge Liang's general star is a star in the north of Xinggong. Sima Yi asked Zhuge Liang, the visiting envoy of Shu, how much rice he ate a day. Through this question, he learned that Zhuge Liang was dying. Zhuge Liang was a strategist of Shu Han. At that time, Liu Bei visited the cottage and invited him out of the mountain. Zhuge Liang lived up to Liu Bei's high expectations and devoted his life to the establishment and development of Shu Han. But people always die, and Zhuge Liang can't escape this fate. At that time, Zhuge Liang's corresponding general star was dim, and Sima Yi also discovered this vision.

Zhuge Liang's general star is a star in the north of the palace, and this star becomes dim, indicating that Zhuge Liang's life is not long. Ancient astronomy divided the whole sky into five parts: east, south, west, north and middle. Each part represents a camp, and each camp has an emperor star. Emperor star is the brightest, and there are many general stars around him. For Shu Han, the emperor star of the northern camp is Liu Bei's general star, and the brightest star besides him is Zhuge Liang's general star, because Zhuge Liang is his important minister. When Zhuge Liang's general star is dim, it shows that Zhuge Liang is dying.

When Sima Yi confronted Zhuge Liang's army, Sima Yi asked Zhuge Liang, the envoy of Shu, how many meters he paid every day, and learned that Zhuge Liang was dying. Sima Yi and Zhuge Liang are old rivals. He knows Zhuge Liang's character and method of sending troops like the back of his hand. Sima Yi's army and Zhuge Liang's army were deadlocked by the Weihe River. Zhuge Liang knew that he might not last long, but Sima Yi had been slow to move. Zhuge Liang was impatient, so he sent a special envoy to visit Sima Yi, mainly to see Sima Yi's situation. Sima Yi thought Zhuge Liang was a little abnormal and asked Zhuge Liang how many meters he had eaten. The messenger said that Sima Yi would be clear after three or four battles a day.

Zhuge Liang's corresponding general star is the star around the emperor star in the north of the Star Palace. Sima Yi inferred that Zhuge Liang was dying by how many meters he ate every day. Zhuge Liang, as an important minister of Shu, has to deal with many problems every day, and he will certainly be very tired. Eating three or four barrels of rice a day is not too much. Sima Yi learned that Zhuge Liang's mental state was already very poor, but he still persisted. Zhuge Liang finally almost wiped out Sima Yi with his tricks.