Full coverage: 2016 Rio Olympics

For more on this, we're now joined by our sports commentator Dong Jun. Welcome to our program.

Q1. Mr. Dong, this is the largest ever Chinese delegation to an Olympics abroad. Why has China sent such a big contingent to Rio?

Q2. In which events do Chinese athletes show promise of winning some unprecedented medals this time, especially gold ones?

Q3. Do you think it's possible for China to acquire more gold medals this time than four years ago in London?

Q4. Complaints on this year's Olympics have been heard, such as problems with apartments in the Village, and security issues. What's your remarks on that?