People enjoy their leisure beside China roses in Istanbul, Turkey, June 10, 2019. China roses planted in Istanbul are in full bloom in early summer. (Photos: Xinhua)

A woman walks past China roses in Istanbul, Turkey, June 10, 2019. China roses planted in Istanbul are in full bloom in early summer.

Photo taken on June 10, 2019 shows China roses in Istanbul, Turkey. China roses planted in Istanbul are in full bloom in early summer.

People walk past China roses in Istanbul, Turkey, June 10, 2019. China roses planted in Istanbul are in full bloom in early summer.

A cyclist stops to enjoy China roses in Istanbul, Turkey, June 10, 2019. China roses planted in Istanbul are in full bloom in early summer.

Photo taken on June 10, 2019 shows China roses in Istanbul, Turkey. China roses planted in Istanbul are in full bloom in early summer.

A runner passes China roses in Istanbul, Turkey, June 10, 2019. China roses planted in Istanbul are in full bloom in early summer.

People walk past China roses in Istanbul, Turkey, June 10, 2019. China roses planted in Istanbul are in full bloom in early summer.

Photo taken on June 10, 2019 shows China roses in Istanbul, Turkey. China roses planted in Istanbul are in full bloom in early summer.