Chinese state media. According to Japan Times, China's own social media networks – mainly Weibo – were full of talk of a possible Taiwan crisis, fuelled by Beijing’s call for people to "stockpile food” and an “unrelated message claiming to show the nation was preparing to mobilize military reserves”.
The website celebsbar.com is an aggregator of news from open sources. The source is indicated at the beginning and at the end of the announcement. You can send a complaint on the news if you find it unreliable.