A cook prepares "samgyetang" at a restaurant on Jeju Island on July 15, 2020, one day ahead of "chobok," the start of the hottest part of summer.

Tourists walk along the Philosopher's Path at Juknokwon bamboo forest in Damyang County, 344 kilometers south of Seoul, on July 14, 2020.

Takashi Matsumoto , a Japanese military attache at the Japanese Embassy in Seoul, arrives at the defense ministry in Seoul on July 14, 2020.

An Indo-Pacific bottlenose dolphin swims in waters off the city of Seogwipo on South Korea's southern Jeju Island on July 14, 2020. (Yonhap)
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Foreign students studying at Hansung University in Seoul eat "samgyetang" on July 13, 2020, three days ahead of "chobok," the start of the hottest days of summer.

A customer buys masks at a discount store in Seoul on July 13, 2020, one day after South Korea's mask ration system ended as the supply of face masks, designed to help fight the new coronavirus, ha

This photo, provided by the Red Cross in Busan, shows its volunteers doing recovery work in South Korea's southeastern port city of Busan on July 11, 2020, after some parts of the city were inundat

People mourn the death of Seoul Mayor Park Won-soon on July 12, 2020, at a memorial altar set up in front of Seoul City Hall in the city center.

Yonhap President and CEO Cho Sung-boo (R) shakes hands with Qatari Ambassador Mohammed Alhayki at his office in Seoul on July 10, 2020. (Yonhap)
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This photo, provided by the Seoul city government, shows people paying tribute at the mortuary of Seoul Mayor Park Won-soon, who was found dead at a mountain in Seoul on July 10, 2020, amid sexual