FUNCHAL, April 10, 2016 (Xinhua) -- Children insert flowers at "the Wall of Hope" of the Plaza of Municipal during the Madeira Flower Festival in Funchal, Madeira Island, Portugal, on April 9, 2016. (Xinhua/Zhang Liyun)

FUNCHAL, April 10, 2016 (Xinhua) -- A parade towards "the Wall of Hope" of the Plaza of Municipal is seen during the Madeira Flower Festival in Funchal, Madeira Island, Portugal, on April 9, 2016. (Xinhua/Zhang Liyun)

FUNCHAL, April 10, 2016 (Xinhua) -- A parade arrive at "the Wall of Hope" of the Plaza of Municipal is seen during the Madeira Flower Festival in Funchal, Madeira Island, Portugal, on April 9, 2016. (Xinhua/Zhang Liyun)

FUNCHAL, April 10, 2016 (Xinhua) -- A parade towards "the Wall of Hope" of the Plaza of Municipal is seen during the Madeira Flower Festival in Funchal, Madeira Island, Portugal, on April 9, 2016. (Xinhua/Zhang Liyun)

FUNCHAL, April 10, 2016 (Xinhua) -- A girl accompanied by her relative inserts a flower at "the Wall of Hope" of the Plaza of Municipal during the Madeira Flower Festival in Funchal, Madeira Island, Portugal, on April 9, 2016. (Xinhua/Zhang Liyun)

FUNCHAL, April 10, 2016 (Xinhua) -- Children insert flowers at "the Wall of Hope" of the Plaza of Municipal during the Madeira Flower Festival in Funchal, Madeira Island, Portugal, on April 9, 2016. (Xinhua/Zhang Liyun)