Farmers work in a field in Tonghai county, Yuxi city, Yunnan province on March 3. Plowing time is coming as the weather warms up. To secure a bumper harvest amid epidemic, farmers in Yunnan have worked on the agricultural production this spring. [Hu Chao/Xinhua]

Farmers grow celery in Tonghai county, Yuxi city, Yunnan province on March 3. [Hu Chao/Xinhua]

Farmers carry cabbages harvested in Tonghai county, Yuxi city, Yunnan province on March 3. [Hu Chao/Xinhua]

Farmers grow celery in Tonghai county, Yuxi city, Yunnan province on March 3. [Hu Chao/Xinhua]

Farmers pack cabbages harvested in Tonghai county, Yuxi city, Yunnan province on March 4. [Hu Chao/Xinhua]

Aerial photo taken on March 3 shows that farmers work in the fields in Tonghai county, Yuxi city, Yunnan province. [Hu Chao/Xinhua]

Aerial photo taken on March 4 shows that farmers work in the fields in Tonghai county, Yuxi city, Yunnan province. [Hu Chao/Xinhua]

Aerial photo taken on March 3 shows that farmers work in the fields in Tonghai county, Yuxi city, Yunnan province. [Hu Chao/Xinhua]

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(Editors: Christine, Rachel)