Photo taken on June 19, 2019 shows the blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Visitors take photos of blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province, June 19, 2019. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Visitors enjoy the sight of blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province, June 19, 2019. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Visitors enjoy the sight of blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province, June 19, 2019. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Photo taken on June 19, 2019 shows the blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Visitors take photos of blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province, June 19, 2019. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Photo taken on June 19, 2019 shows the blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Visitors enjoy the sight of blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province, June 19, 2019. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Photo taken on June 19, 2019 shows the blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)

Visitors pose for photos among blossoming Chinese herbaceous peony flowers on campus of Heilongjiang Agricultural Economy Vocational College in Mudanjiang City, northeast China's Heilongjiang Province, June 19, 2019. Visitors are attracted to about 7,000 blossoming Chinese herbaceous peony flowers here recently. (Xinhua/Zhang Chunxiang)