The 22nd China International Environmental Protection Exhibition was held in BeijingNumber of migrant birds increases in Ulungur Lake National Wetland ParkYellow River's Hukou Waterfall returns to full forcePalace Museum raises the number of daily visitors to 12,000People go outside to enjoy scenery of flowers in many parts of ChinaCanada's tourism spending sharply down in 2020Moss pink flowers in full bloom in HeibeiAzalea flowers enter blooming season in Guizhou, SW ChinaPeople take part in 5Scenery of Nujiang valley in China's Yunnan