Holding up blank pieces of paper, co-opting the national anthem, complicated wordplays: protesters in China are devising a myriad of creative ways to voice dissent against the government and its zero-Covid policy. Here’s how many Chinese have attempted to evade censorship to demonstrate their anger and show support for protests: Blank signs Protesters in multiple cities, including Beijing on Sunday, held up blank A4-sized sheets of white paper in a sign of solidarity and a nod to the lack of free speech in China. Others posted white squares on their WeChat social media profiles. Viral photos also appeared to show…