China media: Charlie Hebdo march

Papers in China continue to call for limitations on press freedom as millions marched in France to condemn the attack on the offices of satirical magazine Charlie Hebdo.

The assault on the offices of the magazine and separate attacks on police officers and a kosher supermarket killed 17 people.

More than 1.5m people marched in the capital on Sunday in a show of unity. The French government said the rally turnout was the highest on record.

About 40 world leaders joined the start of the Paris march, linking arms in an act of solidarity.

China's official Xinhua News Agency, however, says it's important to "reflect on the reasons behind the tragedy".

"After Charlie Hebdo was attacked..., Western societies expressed much support for press freedom," the Xinhua News Agency observes.

The state-run news agency points out that the French magazine had been criticised for their controversial cartoons in the past, but it "insisted on its own way".

"The world is diverse and there should be a limit on press freedom… For the sake of peaceful living, mutual respect is essential. Sarcasm, insults and freedom of speech without limits and principles are not acceptable," says the article.

Another Xinhua commentary and an article in the China Daily echo similar views.

"It is high time for the Western world to review the root causes of terrorism to avoid more violence in the future," says Xinhua.

The China Daily asks: "What on earth are the boundaries between respect for religions and freedom of the press?".

The Global Times says "its staff firmly stands with Europe's people in condemning terrorism" and "nothing in the world can justify acts of terrorism".

The daily, however, reminds the people that they "should not be tricked into falling into a clash of civilizations" because global anti-terrorism efforts "can't be extended to a fight of ideologies".

Turning to domestic news, papers praise a local government for daring to criticise a state-owned company for polluting the environment.

According to reports, the China National Petroleum Corporation's (CNPC) regional branch in Lanzhou, in Gansu province in north-western China, has admitted to management lapses.

The company's admission came after the Lanzhou Environmental Protection Bureau criticised it for a series of chemical leaks, including a serious water pollution case last April and an air pollution case last Thursday due to equipment failure.

The bureau also demanded the petroleum giant apologise to the public in its announcement on Saturday.

"This news [demand of apology] comes as a surprise because many local governments have been treating the big companies as gods," comments Xinhua.

The commentary highlights that close relationships between local governments and big enterprises have often put the credibility of the officials into question.

"Now this tells us that local governments should know where they stand and not be the protector or spokesperson of some organisations... The Lanzhou government has been widely praised for what they did. All other local governments should learn from them," it says.

And finally, papers shine a spotlight on medical screening procedures in China after a five-year-old girl was infected with HIV through blood transfusion.

According to the China Daily, the local health authority in Fujian province have admitted that the young girl was infected with HIV after receiving blood from a donor.

"Current technology doesn't allow for a condition of zero-risk and the rest of the world is facing the challenge as well," Wu Zunyou, head of the National Centre for AIDS/STD Control and Prevention, tells the paper.

The medical expert reveals that each year about 10 people face the same fate due to "limitations of screening technology".

However, Huang Linping, a medical professor, points out that the "overall HIV prevalence remains quite low in China".

"There is no need to panic just because of highly individual cases." he notes.

BBC Monitoring reports and analyses news from TV, radio, web and print media around the world. You can follow BBC Monitoring on Twitter and Facebook.