Complex sentence: An official proposed that Kublai should abdicate in favor of Zhenjin in 1285, a suggestion which angered Kublai, who refused to see Zhenjin, who died soon afterwards in 1286, eight years before his father.
Split into simpler sentences: An official proposed that Kublai should abdicate in favor of Zhenjin in 1285, a suggestion which angered Kublai, who refused to see Zhenjin. Zhenjin died soon afterwards in 1286, eight years before his father.