Veterans attend a Memorial Day ceremony at Plano Veterans Memorial Park in Plano, Texas, the United States, on May 31, 2021. (Photos: Dan Tian/Xinhua)

Veterans attend a Memorial Day ceremony at Plano Veterans Memorial Park in Plano, Texas, the United States, on May 31, 2021.

Flags and wreaths are seen installed at Plano Veterans Memorial Park on Memorial Day in Plano, Texas, the United States, on May 31, 2021.

Flags are seen installed at Plano Veterans Memorial Park on Memorial Day in Plano, Texas, the United States, on May 31, 2021.

A woman and children arrive for a Memorial Day ceremony at Plano Veterans Memorial Park in Plano, Texas, the United States, on May 31, 2021.

People look at a statue at Plano Veterans Memorial Park on Memorial Day in Plano, Texas, the United States, on May 31, 2021.