Coding Pen's braindump for all things cyber, puzzles, and art.https://xinghuajulia.github.io/en-ushttps://xinghuajulia.github.io/blog/bellingcat78/https://xinghuajulia.github.io/blog/bellingcat78/Olden kings from olden days, who will perish and who will stay. Challenge by Geopeter, from his Background Check series.Sun, 27 Sep 2026 00:00:00 GMThttps://xinghuajulia.github.io/blog/bellingcat53/https://xinghuajulia.github.io/blog/bellingcat53/At least not as bumpy as a RyanairSun, 20 Sep 2026 00:00:00 GMThttps://xinghuajulia.github.io/blog/bellingcat11/https://xinghuajulia.github.io/blog/bellingcat11/Looks European... Beer involved?Wed, 16 Sep 2026 00:00:00 GMThttps://xinghuajulia.github.io/blog/bellingcat10/https://xinghuajulia.github.io/blog/bellingcat10/Something is feeshy... something about Russian ports...Tue, 15 Sep 2026 00:00:00 GMThttps://xinghuajulia.github.io/blog/bellingcat4/https://xinghuajulia.github.io/blog/bellingcat4/This is the advent of squinting at car plates...Tue, 15 Sep 2026 00:00:00 GMThttps://xinghuajulia.github.io/blog/jane-street-cards-v5/https://xinghuajulia.github.io/blog/jane-street-cards-v5/My solve for the Jane Street Cards V5 puzzle. Would just say, solving challenges while feeling feverish is a whole nother challenge.Sat, 29 Aug 2026 00:00:00 GMThttps://xinghuajulia.github.io/blog/jane-street-cards-v4/https://xinghuajulia.github.io/blog/jane-street-cards-v4/My solve for the Jane Street Cards V4 puzzle. Credits to Maegan, for this was a joint venture.Sun, 28 Jun 2026 00:00:00 GMT