How old is The Romance of Uncle Kai's Three Kingdoms suitable for children?

Over 8 years old. The Romance of Uncle Kai's Three Kingdoms (set of ***4 volumes) is a heroic story of the Three Kingdoms told by Uncle Kai, the "story king" loved by millions of children. Uncle Kai's Romance of the Three Kingdoms is suitable for children over 8 years old, with a Natural History of the Three Kingdoms, which explains ancient astronomical geography, weapons of chariots and horses, food, clothing, housing and transportation, reads stories of the Three Kingdoms, sees great ambitions, and ignites young heroes' dreams.