(Source: Xinhua)?
Unmanned submersible "Hailong III" completes 400-meter-deep sea test
Driverless subway trains to begin trial run in Shanghai
Celebration of annual Earth Hour campaign held across world
8 kidnapped people freed from rebels' captivity in Syria's Eastern Ghouta
Air show held to mark Pakistan's National Day in Islamabad
Spring scenery across China
Artworks of Chinese artist Qi Baishi exhibited in Malaga, Spain
People enjoy view of cherry blossoms in E China's Nanjing