how we met: a link from Joel Chan's* personal site, in which Philip tells about how to write a good first email, however, the link has disappeared, and I searched on the Internet more about him. No matter how deep I track, the results is just nothing. In fact, he has aborted Internet since early 2020 and deleted most stuff he uploaded in past years, including his blog, youtube channel which contains a huge amounts useful information for knowledge workers in university. I am so sad about knowing him one year late.