Impressed by how the history teacher had influenced her son, Cho has encouraged Chinese students to go to South Korea

For the last five years, the air has been clearing up

"On the visit to Hefei, I found it was not very developed but thought it would have great potential

What's the biggest challenge China faces, and how do you think the country should go about overcoming it? The biggest challenge could come from the changes

Here, we present some of the most striking images around the world this past week