The Soong sisters are today still revered for their contributions to China's political scene and war-time efforts. [Photo provided to China Daily]

Hau adds that he remembers Mei-ling as a "warm and friendly lady, who treated us like her own children" and noted that she would often crack jokes and evoke much laughter at banquets.

Also among the exhibits is the wedding gown that Mei-ling wore in 1927. The white dress features a Chinese qipao-style collar line and a drop-back hem. It is believed that Mei-ling, who was later known as Madame Chiang, had contributed to the design. This bridal look, complete with a white headscarf fastened with a hair clasp, was widely copied at the time, as evidenced by vintage photographs showing a number of celebrities donning similar gowns.

Another significant war-related artifact at the exhibition is the medal that Ching-ling received from the Kuomintang government in recognition for her contributions during the War of Resistance against Japanese Aggression. Ching-ling was also the person who had introduced western authors and journalists to Chairman Mao who was based in Yan'an of Shaanxi.

"Despite their differences, the three sisters each made great contributions to the victory of the war. When you put together the stories of all the three sisters, you'll get a complete picture of the war," said Xiao Guiyu, chairman of the management council of Sun Yat-sen cultural relics in Shanghai.

Xiao added that the Soong sisters are fine examples of the fusion of Chinese and Western cultures who have made a significant impact on the generations of men and women after them.

Ching-ling or Mei-ling did not have any offspring while Ai-ling was survived by two sons and two daughters.

In attendance at the exhibition was Chiang Fang Chi-yi, the widow of Chiang Hsiao-yung. The latter's father is Chiang Ching-kuo, the son of Chiang Kai-shek and his first wife Mao Fumei.