A woman views an artwork at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)

A woman views artworks at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)

A man views artworks at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)

People view artworks at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)

A woman views artworks at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)

A man views artworks at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)

A man views an artwork at the Frieze London art fair in London, Britain on Oct. 4, 2019. Frieze London, an international contemporary art fair, runs from Oct. 3 to 6, featuring artworks from more than 160 galleries around the world. (Xinhua/Han Yan)