A pro-Beijing tycoon has been asked to take over repair work on the damaged tomb of the mother of Nationalist leader Dr Sun Yat-sen at Kowloon Peak, a research institute says. Hong Kong Chung Shan Research Institute chairman Chan Tsim-mong said Sun Zhi-ping, Dr Sun's grandson in Taiwan, had authorised SAR garment tycoon Yeung Chiu, to discuss repairs to the tomb with the Government and the institute. Mr Yeung is also a member of the Chinese People's Political Consultative Conference while the institute studies Dr Sun's history. A large hole was found on top of the 90-year-old tomb of Madame Yang in May. Mr Chan believes the hole was caused by the collapse of decaying planks used to separate the soil covering her grave from the coffin three metres underground. Preliminary reinforcement has been carried out to cover the hole but a warning sign telling sightseers to keep out is still posted there. The Government has yet to decide whether to add the grave to its register of official monuments. A spokeswoman for the Home Affairs Bureau said: 'The Antiquities and Monuments Office has yet to classify the tomb as a monument,' adding that the issue had been raised in June with Dr Lily Sun Sui-fong, a grand-daughter who lives in the United States. More than $4,000 was raised in a campaign by district councillors for the repair project. Albert Chan Wai-yip, a Tsuen Wan District Council member, said the fund-raising campaign was halted after Dr Sun's family took over the task. Madame Yang gave birth to Dr Sun on November 12, 1866, at Cuiheng village in Xianshan, Guangdong. She died in Hong Kong in 1910.