"Zhihu" in Chinese means "Do you know" and was founded in 2011 in China. It's similar to the early Yahoo! Knowledge, but this platform specializes in sharing knowledge from various industries. It can also be used as a blogging platform, where you can publish articles. If you're tired of seeing your friends' updates on Facebook, come to this platform and see new updates and knowledge related to your work, to make yourself more proficient.