Note that (1) your second link is broken, but (2) that case study was retracted with no explanation yet given: https://www.scmp.com/news/china/science/article/3074351/coronavirus-can-travel-twice-far-official-safe-distance-and-stay (see the top of the article body, the headline was not updated): “Note: The study at the centre of this article on the transmission of the coronavirus was retracted on Tuesday by the journal Practical Preventive Medicine without giving a reason. The South China Morning Post has reached out to the paper’s authors and will update the article.”
Note that (1) your second link is broken, but (2) that case study was retracted with no explanation yet given: https://www.scmp.com/news/china/science/article/3074351/coronavirus-can-travel-twice-far-official-safe-distance-and-stay (see the top of the article body, the headline was not updated): “Note: The study at the centre of this article on the transmission of the coronavirus was retracted on Tuesday by the journal Practical Preventive Medicine without giving a reason. The South China Morning Post has reached out to the paper’s authors and will update the article.”
Thank you, this is exactly the kind of help I was hoping to get from opening this thread.