This photo taken on October 24, 2019 shows the ivy-covered wall of a building on campus at Liaoning University in Shenyang, Liaoning Province. (Photos: IC)

This photo taken on October 24, 2019 shows the ivy-covered wall of a building on campus at Liaoning University in Shenyang, Liaoning Province.

This photo taken on October 24, 2019 shows the ivy-covered wall of a building on campus at Liaoning University in Shenyang, Liaoning Province.

This photo taken on October 24, 2019 shows the ivy-covered wall of a building on campus at Liaoning University in Shenyang, Liaoning Province.