'Big Spender' Cheung Tze-keung fulfilled his last wish yesterday by seeing his two sons before the appeal against his execution is decided this morning. Separated by a window pane in the detention centre and only able to speak through a telephone, the sons appeared bewildered and lost for words despite not having seen their father since January, witnesses said. Cheung's common-law wife, Law Yim-fong, made the last-minute decision yesterday morning to let her sons see their father at the Kemulang detention centre. The boys, aged four and seven, were collected from school at 11am by their grandfather. 'Cheung's wife is very sick and she is very worried that she might appear too emotional when seeing her husband together with their two sons, so she made the difficult decision to stay behind by herself,' said the assistant of Cheung's Hong Kong lawyer. Cheung's wife packed a dark blue overcoat, underwear and other clothes for her husband. However, the detention centre only accepted the coat as the temperature in Guangzhou yesterday dropped to nine degrees Celsius. Escorted by the gangster's Guangzhou lawyer, Tong Jianhua, the two boys and Cheung's father-in-law arrived at the detention centre in a private car, its windows screened by curtains, at about 3pm. Lawyers covered the boys' faces as they entered the centre. About a dozen armed police officers erected roadblocks at a foothill, which is about a three-minute drive from the detention centre. The meeting lasted for about 30 minutes. Witnesses said Cheung was on the verge of tears and kept repeating to his father-in-law: 'Take care of my boys.' The father-in-law said Cheung had asked why his wife had not come. He said seeing his sons made him happy, but it would have been better if his wife had also come. Thirty-six defendants of the Big Spender gang were convicted on November 12 of a series of crimes involving kidnappings, trading and smuggling of arms and ammunition and robbery. Five people - Cheung, Chan Chi-ho, Chin Hon-sau and mainlanders Ma Shangzhung and Liang Hui - were sentenced to death.