A man plays "Pokemon Go" by Hoan Kiem Lake in Hanoi, Vietnam, August 18, 2016. REUTERS/Kham

A man plays “Pokemon Go” by Hoan Kiem Lake in Hanoi, Vietnam, August 18, 2016. REUTERS/Kham

A man plays "Pokemon Go" by Hoan Kiem Lake in Hanoi, Vietnam, August 18, 2016. REUTERS/Kham

August 19, 2016 3:16 AM (UTC+8)