Musicians surrounded by flowers perform at Avenida Presidente Masaryk, Mexico City, capital of Mexico, April 7, 2019. The Flowers and Gardens Festival 2019 (el Festival Flores y Jardines 2019) with a theme of natural environment and species protection is held at Avenida Presidente Masaryk, a famous shopping street in Mexico City. (Xinhua/Xin Yuewei)