The hook is very interesting, and I am attracted to continue reading. Although the voice of the essay is really good and not way too academic, which well communicates its vision and engages the readers, I did feel that the essay is too powerful, but the issue is obviously significant. The tone of the entire essay is more plain and calm, and I did not feel the urgency of solving this problem. Moreover, it only describes one solution to the issue which is to pay more attention to the product managers, and maybe more solutions and counterarguments could help this essay become more multifaceted. There are sources to support Thomas’s claims, but it has no bibliography at the end of the paper. The flow of the essay is nice with clear transitions between each paragraph, and the paper is easy to understand and follow with no long or difficult sentences to read. However, the essay lacks background information about “996”, and it's like a concept just suddenly comes out in China in your essay, so it is essential to provide more information about why “996” happens, and how it is unique in China. Also, it is unclear that your solution in the paragraph is only for China or for the global world, and if it is only for China, do you have any new inspiration from other countries to improve your solution? Do other countries have similar problems, and how do they solve that? What can we learn from other countries? Furthermore, what are the bigger implications to the world of your solution, what does it do for the world in a positive way? These are all problems that you might need to consider more. Also, because “996” is an issue relating to labor forces, I assume it does something with the labor law, but I did not see any relations in your paragraph. And I was a little confused about how you came up with the solution of focusing on the PM. Overall, a very good start on the WP4, and it can be done much better with development!