Wang Din-shin, father-in-law of the late tycoon Nina Wang Kung Yu-sum, who fought an epic legal battle with her over the estate of her kidnapped husband, has died aged 98. He reportedly had cancer. Ringo Wong Lai-chuen, former personal assistant to Nina Wang, confirmed yesterday that Wang Din-shin had died early this month. He said he was informed of the death on Wednesday. Wong said the family company, Chinachem Group, would provide 'all the necessary support, including finance and human resources for the funeral service and the family'. Wang, born on October 15, 1911, in Wenzhou , Zhejiang province, started work in his father's dye company at the age of 17 and took it over after his father died in 1930. Married to Ruen Yu-chin in 1932 when he was 21, he had three sons and two daughters, Teddy Wang Teh Huei - Nina's husband - Teresa Sun Tak-shyan (formerly Wang Teh-hsien), Wang Teh-hwa, Wong Tak-miu and Wong Tak-tzai. In 1937 the family moved to Shanghai and in 1941 he set up a trading company called China United Chemical Company, the foundation of the Chinachem Group. In 1945, after the end of the second world war, he came to Hong Kong and set up a branch of the company. Though it suffered from a trading embargo during the Korean war in the 1950s, the company grew under the hand of Teddy Wang into the Chinachem Group, starting a plastics business in 1958 and a property business in 1960. Teddy Wang was kidnapped twice, once in 1983 and again in 1990. He disappeared after the second kidnap and was declared legally dead in 1999. Wang Din-shin's epic legal battle with his daughter in law dated to July 1997, when he filed a probate action applying for a declaration that Teddy Wang was dead and that a will made in 1968 leaving everything to the father should be executed. His son's body was never found. In November 2002, after a 171-day court battle, the High Court declared a will produced by Nina Wang, who claimed it was made by her husband a month before his abduction, a forgery, and awarded all of Teddy Wang's estimated HK$128 million estate to Wang Din-shin. Nina Wang appealed against the ruling but lost in June 2004. In September 2005, the Court of Final Appeal overturned the High Court ruling, and Nina Wang inherited the Chinachem estate. He was awarded an ongoing payment of HK$78,000 a month. Another legal battle between fung shui master Tony Chan Chun-chuen and Nina Wang's siblings followed her death in April 2007. Wang Din-shin became involved but quit before the trial began in May last year.