A swan is seen through flowers at the Marie Louise Square in Brussels, Belgium, March 26, 2021. (Photos: Xinhua/Zhang Cheng)

A man walks past magnolia flowers at the Laeken Park in Brussels, Belgium, March 29, 2021.

People walk past magnolia flowers at the Laeken Park in Brussels, Belgium, March 29, 2021.

People take a rest under magnolia flowers at the Laeken Park in Brussels, Belgium, March 28, 2021.

People take selfies among flourishing narcissi at the Laeken Park in Brussels, Belgium, March 28, 2021.

Photo taken on March 23, 2021 shows cherry blossoms in Brussels, Belgium.

People view magnolia flowers at the Laeken Park in Brussels, Belgium, March 28, 2021.

People view flowers at the Laeken Park in Brussels, Belgium, March 28, 2021.

Photo taken on March 29, 2021 shows magnolia flowers in Brussels, Belgium.

A child views magnolia flowers at the Marie Louise Square in Brussels, Belgium, March 23, 2021.