https://techcrunch.com/2020/05/24/work-collaboration-unicorn-notion-is-blocked-in-china/

Notion, the fast-growing work collaboration tool that recently hit a $2 billion valuation, said on Twitter Monday that its service is blocked in China.

The productivity app has attracted waves of startups and tech workers around the world — including those in China — to adopt its all-in-one platform that blends notes, wikis, to-dos, and team collaboration. The four-year-old San Francisco-based app is widely seen as a serious rival to Evernote, which started out in 2004.