A Saucy App Knows China's Taste in News. The Censors Are Worried.

One of the world's most valuable start-ups got that way by using artificial intelligence to satisfy Chinese internet users' voracious appetite for news and entertainment. Every day, its smartphone app feeds 120 million people personalized streams of buzzy news stories, videos of dogs frolicking in snow, GIFs of traffic mishaps and listicles such as "The World's Ugliest Celebrities." Now the company is discovering the risks involved, under China's censorship regime, in giving the people exactly what they want. The makers of the popular news app Jinri Toutiao unveiled moves this week to allay rising concerns from the authorities. Last week, the Beijing bureau of China's top internet regulator accused Toutiao of "spreading pornographic and vulgar information" and "causing a negative impact on public opinion online," and it ordered that updates to several popular sections of the app be halted for 24 hours.