A man wearing a face mask walks in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A woman wearing a face mask walks in a market in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A woman wearing a face mask talks with a vendor in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A taxi driver wearing a face mask is seen in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

People wearing face masks walk past a convenience store in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

People wearing face masks walk in a market in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A worker wearing a face mask cleans the external facade of a building in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A woman wearing a face mask walks in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A woman dries her mask with an electric radiator in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)

A man wearing a face mask walks in Seoul, South Korea, Jan. 6, 2021. South Korea has extended its tightened social-distancing rules for two more weeks amid a continued COVID-19 resurgence. The Seoul metropolitan area will be placed under the second-highest Level 2.5 social-distancing guidelines for two more weeks until Jan. 17, according to the Central Disaster and Safety Countermeasure Headquarters. (Xinhua/Wang Jingqiang)