When asked why he started doing this, he confesses that there was not much planning.

"On March 5 when I was checking the COVID-19 statistics on Twitter, I found the official updates only contain the figures," Wu says. "I wanted to know the trend, so I produced a line chart and commented below."

With his comments gaining popularity, he kept on updating and modifying his charts according to followers' feedback.

Wu says that he simply wants to help more people, even confined at home. "Every time I post my charts, the immediate comments let me know that many are paying close attention to the statistics, and my charts can help them view the data in a clearer way," he says.

Wu also received questions about both his charts and general pandemic prevention from professionals in different walks of life. A few Twitter users have even started a hashtag "Peng for PM", to which he laughs and says that British people have a noted sense of humor.

He will continue his twice-a-day updates until the pandemic is under control and the number of confirmed cases stops increasing in the UK.