【明報專訊】RECENT surveys have found Chief Executive Donald Tsang Yam-kuen's approval ratings dipping lower and lower. Citizens are turning their backs on Tsang not only because he has been found to have accepted tycoons' hospitality and lavished taxpayers' money. The principal reason why Tsang is retiring ignobly from public service is that, after seven years at the helm, he has left Hong Kong in the mire of deep-seated conflicts, with all the potential consequences.