Anon Nampa, one of the leaders of recent anti-government protests takes off his own mask during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

Anti-goverment protesters hold up masks of Anon Nampa, one of the leaders during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

A mask of Anon Nampa, one of the leaders is seen in front of anti-government protesters during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

Anon Nampa, one of the leaders of recent anti-government protests speaks during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

Anon Nampa, one of the leaders of recent anti-government protests speaks during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

Anon Nampa, one of the leaders of recent anti-government protests speaks during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

An anti-government protester wearing a mask of Anon Nampa, one of the leaders flashes a three-fingers salute during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

An annti-government protester holds up a placard during a demonstration demanding the resignation of Thailand's Prime Minister Prayuth Chan-ocha in Chiang Mai, Thailand, August 9, 2020. REUTERS/Athit Perawongmetha

An ethnic Kayan hill tribe refugee woman, also known as long neck woman, knits inside their tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

An ethnic Kayan hill tribe refugee woman, also known as long neck woman, cooks at her hut inside their tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

An ethnic Kayan hill tribe refugee girl, also known as long neck woman, poses at her tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva TPX IMAGES OF THE DAY

An ethnic Kayan hill tribe refugee girl, also known as long neck woman, poses at her tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

An ethnic Kayan hill tribe refugee woman, also known as long neck woman, poses at her tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

An ethnic Kayan hill tribe refugee woman, also known as long neck woman, sits with her baby inside their tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

An ethnic Kayan hill tribe refugee woman, also known as long neck woman, poses at her tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

An ethnic Kayan hill tribe refugee woman, also known as long neck woman, poses at her tourist attraction village near Chiang Mai, Thailand December 23, 2019. REUTERS/Jorge Silva

Taiwan Navy personnel salute on a Ching Chiang class (Jin-Jiang) Feng Chiang (PG-607) patrol ship after Hai-an No. 10 maritime exercises, simulating fending off terror attacks and invasion at Taipei Port, New Taipei City, Taiwan May 4, 2019. REUTERS/Tyrone Siu

A Navy Ching Chiang class (Jin-Jiang) Feng Chiang (PG-607) patrol ship (C) takes part in Hai-an No. 10 maritime exercises, simulating fending off terror attacks and invasion outside Taipei Port, New Taipei City, Taiwan May 4, 2019. REUTERS/Tyrone Siu

Forest fire smoke rises over a mountain outside Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

Men wearing masks are seen as they work near ancient palace in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

A woman wearing a mask rides her bike in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

Motorists travel on a road during a hazy day in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

A woman wears a mask as she prepares to open her shop in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

A man wears mask as he sweeps the ground near a palace in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

A man wears a mask as he uses his phone at airport in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

A woman wears a mask as she rides her bike in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

A man wears a mask as he walks near a palace in Chiang Mai, Thailand April 3, 2019. REUTERS/Soe Zeya Tun

The construction site of a government luxury housing project earmarked as homes for judges on land in the foothills of Doi Suthep mountains is seen in Chiang Mai, Thailand May 6, 2018. REUTERS/Panu Wongcha-um

Marian a retiree from San Francisco, California walks in a garden while staying at the Care Resort in Chiang Mai, Thailand April 5, 2018. Picture taken April 5, 2018. REUTERS/Jorge Silva

A group of retired foreigners attend a Tai Chi class, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

Charles, a retiree from England rides a golf car after having dinner, while staying at the Care Resort in Chiang Mai, Thailand April 5, 2018. Picture taken April 5, 2018. REUTERS/Jorge Silva

Bryan Walker a retiree from England reads outside his room while staying at the Care Resort in Chiang Mai, Thailand April 5, 2018. Picture taken April 5, 2018. REUTERS/Jorge Silva

A retired couple walk while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

Charles, a retiree from England has breakfast in bed, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

Wolfgang, 96, from Switzerland is helped to walk by two nurses, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

A group of retired foreigners attend a Tai Chi class, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

Retired foreigners Charles (L) and Edward have dinner, while staying at the Care Resort in Chiang Mai, Thailand April 5, 2018. Picture taken April 5, 2018. REUTERS/Jorge Silva

A retired woman is helped by a nurse, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

A retired woman is helped by a nurse, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

A retired woman is helped by a nurse, while staying at the Care Resort in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

A Thai Airways flight attendant dressed in traditional costume welcomes passengers onboard, as interest for historical clothing rises within the country, in Chiang Mai, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

A Thai Airways flight attendant dressed in traditional Thai costume serves passengers, as interest for historical clothing rises within the country, in a flight between Chiang Mai and Bangkok, Thailand April 6, 2018. Picture taken April 6, 2018. REUTERS/Jorge Silva

Women prisoners attend a Thai massage class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

Women prisoners are seen during their lunch at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a computer class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners embroider cloths at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners hold up their infants at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

A woman prisoner cleans a cell at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a Thai massage class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a Thai massage class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners are seen at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

A woman prisoner attends a computer class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners are seen at the Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a computer class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

A cell is seen at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha

Princess Bajrakitiyabha attends a study visit at the Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 25, 2018. REUTERS/Athit Perawongmetha

Princess Bajrakitiyabha attends a study visit at the Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 25, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a yoga class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 25, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a yoga class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 25, 2018. REUTERS/Athit Perawongmetha

Women prisoners attend a class at Chiang Mai Women's Correctional Institute, in Chiang Mai, Thailand, January 24, 2018. Picture taken January 24, 2018. REUTERS/Athit Perawongmetha