[1] She was born in Jiujiang and met Chiang when she was working at a training camp for enlistees in the fight against Japan while he was serving as the head of Gannan Prefecture.

Chang Ya-juo died under mysterious circumstances; after dining at a friend's house, she came home complaining of stomach cramps.

[2][3] After their mother's death, the twins were raised by Chang's brother and sister-in-law, Chang Hau-juo (章浩若; Zhāng Hàoruò) and Chi Chen (季琛; Jì Chēn), respectively, who were officially listed as their parents.

[5] They escaped to Taiwan with their uncle and aunt in 1949 and settled near Hsinchu.

After a legal process[6] that included obtaining written declarations from Chi's sons, documents attesting to the father-sons relationship between Chiang Ching-kuo and the twins from retired general Wang Sheng (王昇; Wáng Shēng), the birth certificate listing Chang Ya-juo as his mother and DNA testing to prove that Chi was not his birth mother, John Chiang was able to obtain a new ID card listing Chiang Ching-kuo and Chang Ya-juo as his biological parents in December 2002.