What was the relationship between Sun Xiu and Sun Hao in the Romance of the Three Kingdoms?

In Yuan Kuocheng's Romance of the Three Kingdoms, after Sun Xiu became the emperor of Wu State, there was no explanation in the middle. Then, he suddenly mentioned that the emperor of Wu State was Sun Hao. What was the relationship between Sun Xiu and Sun Hao? How did Sun Hao inherit Sun Xiu's throne?
In Yuan Kuocheng's Romance of the Three Kingdoms, chapter 348 talked about Sun Quan passing the throne to Sun Liang due to his illness. Sun Jun, the general of the Imperial Army, killed Zhuge Ke. Chapter 350 talked about Sun Chen, the general of the State of Wu, returning from the defeat of the State of Jin. Sun Liang was deposed and Sun Xiu was appointed emperor. Old general Ding Feng helped Sun Xiu get rid of Sun Chen. From chapter 351 to chapter 362, Jiang Wei of Western Shu attacked the State of Jin. During this period, he did not mention anything about Wu. However, in the 363rd chapter, it was suddenly mentioned that the Emperor of Dongwu, Sun Hao, sent Lu Kang's troops to the State of Jin. I'm confused. What's the relationship between Sun Jun and Sun Chen? What was the relationship between the two emperors, Sun Xiu and Sun Hao? How did Sun Hao ascend the throne?

Answer 1

In Yuan Kuocheng's Romance of the Three Kingdoms, Sun Xiu and Sun Hao were brothers. According to the novel, Sun Xiu, the general of the State of Wu, was Sun Quan's cousin, and Sun Hao was Sun Xiu's son. Since Sun Quan's two brothers, Sun Jian and Sun Jing, had both contributed to the establishment of the State of Wu, Sun Xiu and Sun Hao were mentioned in the same breath in the novel to emphasize their close relationship.