He was allowed to show it in his gallery to prospective buyers.
Chua took the painting back to the gallery and had to display it horizontally
since the ceiling was not high enough to accommodate the work.
"It's an important painting and people like to collect major paintings,"
gallery-owner Chua said.
The painting was sold to a Singaporean, whose identity was withheld.
Chen told The Straits Times she plans to paint at least four other nude
paintings for a solo exhibition in Beijing this year.
"I hope Singapore can become more open in the future," the 38-year-old artist
was quoted as saying.