sentences:  After Sun's death, a power struggle between his young protégé Chiang Kai-shek and his old revolutionary comrade Wang Jingwei split the KMT.At stake in this struggle was the right to lay claim to Sun's ambiguous legacy.In 1927 Chiang Kai-shek married Soong Mei-ling, a sister of Sun's widow Soong Ching-ling, and subsequently he could claim to be a brother-in-law of Sun.