China urges the United States to listen to "rational voices" over the social media platform TikTok, as a law banning the wildly popular app on national security grounds comes into effect. "We hope that the US side will seriously listen to rational voices and provide an open, fair, just, and non-discriminatory business environment for market entities from all countries operating in the United States," foreign ministry spokeswoman Mao Ning says at a regular press briefing. SOUNDBITE