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Outdoor temperature hit 35°C on July 13. Sanjiao Town was carrying out the fifth round of regional nucleic acid testing on the day. Medical staff and volunteers devoted themselves to the fight against the epidemic in the hot environment.

Sweat soaks the uniform of a medical worker.

A sanitation worker remains at his station.

Medical workers cool their feet with ice.

A medical worker drinks water during an interval between busy work.

In the scorching heat, large blocks of ice were placed in the sampling site.

On July 12, Sanjiao Town continues to carry out regional nucleic acid testing for free.

A volunteer's protective gloves are soaked with sweat.

A medical worker delivers the collected nucleic acid samples in the heat.