Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019. (Photos: Xinhua)

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Kabul, capital of Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Lashkar Gah, capital of Helmand province, Afghanistan, Aug. 19,2019.

Afghans celebrate Afghan Independence Day in Lashkar Gah, capital of Helmand province, Afghanistan, Aug. 19,2019.

A military convoy is seen during the celebration of Afghan Independence Day in Lashkar Gah, capital of Helmand province, southern Afghanistan, Aug. 19, 2019.

A military convoy is seen during the celebration of Afghan Independence Day in Lashkar Gah, capital of Helmand province, southern Afghanistan, Aug. 19, 2019.

Afghans celebrate Afghan Independence Day in Lashkar Gah, capital of Helmand province, Afghanistan, Aug. 19,2019.