The mobile apps for four popular news apps in China, including the most popular aggregator, Jinri Toutiao, were removed from a number of Chinese smartphone app stores following reports of a crackdown by the country's media watchdog, local media reported on Monday. From the report: Toutiao, with about 120 million daily active users, was not available on the app stores of smartphone manufacturers Xiaomi and Meizu on Monday afternoon. The apps for Tiantian Kuaibao, Netease News and Ifeng News were also not found on Xiaomi. China's authorities have asked several of the country's smartphone app stores to remove the four apps by 3pm on Monday as part of efforts to "regulate order in the broadcasting environment," according to Chinese news portal Sohu.com. The apps will be removed for between three days to three weeks, with Toutiao being offline for the longest period, according to the Sohu report. [...] China has shut down more than 13,000 websites in the last three years as Beijing sought to tighten its grip on the internet.