Visitors look at modern and contemporary artworks displayed on a preview exhibition ahead of Christie's Autumn Auctions Hong Kong in Hong Kong, South China, Nov 16, 2020. The 2020 Christie's Autumn Auctions Hong Kong will be held between Nov 27 and Dec 5.(Photos: Xinhua)

Visitors look at modern and contemporary artworks displayed on a preview exhibition ahead of Christie's Autumn Auctions Hong Kong in Hong Kong, South China, Nov 16, 2020. The 2020 Christie's Autumn Auctions Hong Kong will be held between Nov 27 and Dec 5.

Visitors look at modern and contemporary artworks displayed on a preview exhibition ahead of Christie's Autumn Auctions Hong Kong in Hong Kong, South China, Nov 16, 2020. The 2020 Christie's Autumn Auctions Hong Kong will be held between Nov 27 and Dec 5.

Visitors look at modern and contemporary artworks displayed on a preview exhibition ahead of Christie's Autumn Auctions Hong Kong in Hong Kong, South China, Nov 16, 2020. The 2020 Christie's Autumn Auctions Hong Kong will be held between Nov 27 and Dec 5.