After His Son Became Emperor, the Old Woman Began to Practice Immortality.

After her sons had conquered the country, Old Lady Fang began to acquire the skills of cultivating immortals. Wait until the old lady succeeds in cultivating immortality. Only to find that the emperor's son was missing. The country is in chaos. The fake uncle is forced to go to the palace. Thirteen princes attacked the city! In this situation, how can you let me, an old woman who has cultivated immortality to the point of being invincible in the world, get around?