• The building that houses the museum is called “晚晴园” (Wan Qing Yuan). It was bought by wealthy Singaporean businessman Teo Eng Hock in 1905, originally as a residence for his elderly mother. The name “Wan Qing Yuan” signifies the peace and blessings that he wanted for his mother in her twilight years.
• In late 1905, Teo Eng Hock offered the villa to Sun Yat Sen for his revolutionary activities. Sun Yat Sen subsequently established the Tong Meng Hui (Chinese Revolutionary Alliance) Singapore Branch at Wan Qing Yuan, and designated Wan Qing Yuan as the Southeast Asian headquarters of the Chinese Revolutionary Alliance. After the success of the 1911 Revolution, Teo Eng Hock sold Wan Qing Yuan to an Indian businessman.
• In 1937, several leaders of Singapore’s Chinese community, including Lee Kong Chian and Tan Ean Kiam, pooled their resources to purchase Wan Qing Yuan, which they then placed under the trusteeship of the Singapore Chinese Chamber of Commerce & Industry.
• In November 1994, Wan Qing Yuan was gazetted by the Singapore Government as a Historic Site. Since 2009, it has been managed by the National Heritage Board.

Sun Yat Sen Nanyang Memorial Hall will host the Wan Qing Festival of Spring 2020. This is the first time that art installations with a modern technological twist will be displayed, to attract more members of the public to celebrate the festive season there. (Lianhe Zaobao, 4/1/2020)

Teo Eng Hock (1872–1957), whose ancestors came from Raoping county, Guangdong province, was born in Singapore. He was one of Sun Yat Sen’s main overseas supporters for the 1911 Revolution.