The 13th National Games of China is held in Tianjin on Sunday evening at the Tianjin Olympic Center Stadium. [Photo/Xinhua]

Dubbed China's "mini-Olympics", the curtains were raised for the 13th National Games of China here on Sunday evening at the Tianjin Olympic Center Stadium, nicknamed the "Water Drop".

Among those present at the ceremony was President of International Olympic Committee (IOC) Thomas Bach, who's on a visit to Beijing inspecting the preparations for the 2022 Winter Games.