Former Taiwanese president Chen Shui-bian's chief accountant, Chen Chen-hui, pleaded guilty to corruption charges yesterday, but stressed she had acted under the instruction of her superiors. Legal experts said her guilty plea had dealt a heavy blow to the ex-leader, who is facing trial on graft charges, as Chen Chen-hui is the first co-defendant in the massive corruption case to have admitted unlawful behaviour. The former chief accountant, who had agreed to become a defendant-turned-witness, was brought before the Taipei District Court for the hearing, during which she pleaded guilty to the charges of embezzlement, money laundering, document forgery and false testimony. 'I am guilty,' she told Judge Tsai Shou-hsun, but said she was following the instructions of her superiors, including the wife and two former chief aides of Chen Shui-bian. She said that between 2000 and 2002 the ex-president's wife, Wu Shu-chen, had asked her to bring NT$37.86 million (HK$8.48 million) in cash to the presidential residence. Those funds were part of the NT$104 million in special state funds for which Chen Shui-bian and his wife were charged with embezzlement by Taiwanese prosecutors. She also said Wu had asked her to wire some of the funds to Wu's brother, Wu Ching-mao, who was charged with helping his sister launder money abroad. She said both Ma Yung-cheng and Lin Te-hsun, the two former chief aides of Chen Shui-bian, knew she gave the funds to Wu because she needed to get approval from the two aides to account for the funding claims. At a court hearing on Tuesday, the two aides denied knowledge of the fund flow, saying Chen Chen-hui was the only person taking care of it. Chen Chen-hui also rejected accusations by the two aides that she had prepared several fake lists of people to receive cash gifts when making funding claims for Wu. 'Those lists were given to me by them and I was merely copying the names in the forms to make funding claims,' she told Judge Tsai. At a February 4 hearing, Chen Chen-hui only admitted she was guilty of document forgery and false testimony, and refused to admit to corruption and money laundering. According to her lawyer, Lin Ta-chieh, Chen Chen-hui decided to plead guilty after reaching a plea bargain with prosecutors who agreed to drop charges against her. Mr Lin said his client was also upset that the two aides had tried blame her. So far 10 people - including Wu, her son Chen Chih-chung, daughter-in-law Huang Jui-ching, brother Wu Ching-mao and sister-in-law Chen Chun-ying - have admitted their roles in the corruption case. Fourteen people in total are facing charges. At the hearing last week, Wu admitted to money laundering and forgery but denied embezzlement and accepting bribes, with which the ex-president was also charged. Her other relatives admitted only to money laundering and their jail sentences will be no longer than seven years.