What should be done to avoid such tragedies from happening?

Topic2 Zhou Libo got criticized for improper jokes about HanfuComedian-host Zhou Libo is being criticized again for making improper jokes. In a recent TV show he hosts, Zhou called traditional Han costume of performers as Korean costume and said something indicating it looks like clothes from some places of prostitution. Many netizens criticized him for not respecting the performers and lack of basic cultural knowledge.

Is it OK for Zhou to make such jokes in public?

Topic3 PKU and Tsinghua in Feud Over Top StudentsTsinghua University and Peking University, two of the most prestigious universities in China, accused each other of luring top students in gaokao via underhanded means.

What happened?

Topic4 Different People Prefer Different Smartphone FunctionsSmart phones today are indispensable to almost everyone. They're communication devices, music players, electronic book readers and portal micro game consoles.

Although we are all unable to live without smart phones, people of different ages don't use smart phones in exactly the same way.

What does the research say?