In this aerial photo taken on April 6, 2019, tourists enjoy tulips in Yancheng, Jiangsu province. [Photo/VCG]

In this aerial photo taken on April 6, 2019, tourists enjoy tulips in Yancheng, Jiangsu province. [Photo/VCG]

This aerial photo taken on April 6, 2019 shows villages in Xuancheng, Anhui province. [Photo/VCG]

Tourists enjoy apricot blossoms in Hami, Xinjiang Uygur autonomous region, April 6, 2019. [Photo/VCG]

This aerial photo taken on April 6, 2019 shows apricot blossoms in Hami, Xinjiang Uygur autonomous region. [Photo/VCG]

Tourists visit a field of rapeseed plants in Taizhou, Jiangsu province, April 6, 2019. [Photo/VCG]

Tourists visit a field of rapeseed plants in Taizhou, Jiangsu province, April 6, 2019. [Photo/VCG]