A book launched in Taipei on September 14 cites 
Chiang Ching-kuo's diary to dispute the Chiang lineage of Taipei Mayor Chiang Wan-an's father, as the late general Kuo Li-po's son renewed a call for a DNA test. The mayor, asked about the demand, said he had already answered the question "four years ago."
What does the book claim? Its author, Huang Ching-lung, founding chairman of the Hsin Min Association, writes that Chiang directly denied in his diary that the twins born to Chang Ya-juo, Chang Hsiao-yen and Chang Hsiao-tzu, were connected to him. In the diary, Huang writes, Chiang said the twins were born out of wedlock to Wang Chi-chun and "a woman surnamed Chang," and that he looked after them out of feeling for a late friend. Kuo Li-po admitted before his death that "the Chang Hsiao-yen brothers are my children," Liberty Times reported. Huang said the diary directly undermines the legality of Chang Hsiao-yen's change of surname to Chiang.
What did Kuo Li-po's son say? Kuo Yi-hsi, speaking at the launch in the National Taiwan University alumni hall, said he hoped the mayor would face the question bravely, CNA reported. "I'm willing to test with you!" he told reporters. He said Chiang Ching-kuo, Kuo Li-po and Chang Ya-juo had got along well, Liberty Times reported.
What is Huang asking for? Huang said that because the mayor is seeking re-election and may one day aim for the presidency, he owes the public an explanation of his lineage, calling a request for a DNA test basic respect for voters, not a partisan fight. He also said the diary had negated the "presumed acknowledgment" on which household registration officials let Chang Hsiao-yen change his listed biological father to Chiang, and that the Interior Ministry should revoke that decision, CNA reported. In a September 2022 book, Huang had written that Chang Hsiao-yen's biological father was very likely Kuo Li-po and that the mayor should take the surname Kuo.
How has the mayor answered before? In 2022, he said no one can decide their own birth and that "whether my surname is Chang or Chiang isn't important; loving Taiwan is my DNA," CNA reported. More recently he said DNA should not be debated at every election: someone asked him for a test four years ago, and "now they want me to take a DNA test again."
Figures referenced: Chiang Ching-kuo. — JudgeMarket.
