As they walk into the shopping mall for the second wedding of their lives, the elderly couples look young again. One man tries to stand straight and smiles. Another helps his wife fix her head dress. The wives - all grandmothers - smile shyly. As the wedding music swells, their emotions stir. Holding the arm of her husband, Cheung Ching-yee's eyes brim over as the music throws her back into a sea of bitter and sweet memories from half a century ago. 'I was forced to marry a relative's son who lived in Shanghai. I refused and my husband and I had to date secretly,' Ms Cheung, 74, said. So Kam-hon, 79, proved to be a sweet man and the two have held on to one another for 50 years. The Sos were one of six elderly married couples chosen by Sun Hung Kai Properties for a mock wedding celebration to pass on to today's young the formula for a good, long-lasting marriage. They were chosen from more than 100 couples recommended by community centres and homes for the elderly. Their stories, with many having arranged marriages, are an inspiration in an age when many unions fall on rocky times and frequently end in violence or divorce. 'The old couples always forgive, they are patient and treat each other as friends,' said Maureen Fung Sau-yim, general manager of leasing, who was inspired to organise the wedding to showcase the elderly couples' magic to young couples. Asked how Mr So and his wife, who have six grandchildren, kept their marriage strong, Mr So said: 'We were patient with each other.' And a bit of a romance helps. They send a card to each other on each birthday, declaring their love. And a sense of humour also works. In one card, Ms Cheung wrote: 'To my breadwinner, from your free helper.' Fong Mui-sem, 79, said she and her husband, Mak Kam-shing, 83, had a 'blind' marriage - she didn't get to see him until their wedding day. 'My family arranged that I marry him. I never saw him but he secretly followed me one day to take a glance at me when I went to the park with my cousin,' she said. After a brief adjustment period, the couple got on well. Though her husband has never cooked for her, Ms Fong said she had been happy all their married life. 'I didn't have many requests.' Two years ago, her husband had a heart operation. 'I was afraid that I would lose him,' she said. Chan Hu, 81, and Chung Wai-him, 76, who were poor and lived in a squatter camp when they were married, said putting too much importance on money was one reason for the hardships of many marriages today.