Full coverage: President Xi Visits 3 Nations, Attends SCO Summit

We now turn to our reporter Xi Jia in Belgrade for more on the second day of Xi's state visit.

Q1: Xi Jia, infrastructure construction is a vital part of China-Serbia cooperation. Can you tell us more about that?

Q2: The "16 plus 1 mechanism" is intended to expand ties between China and counties in central and eastern Europe. How has it and China's Belt and Road Initiative improved relations between the two countries?