Notes on engineering, reading, and everyday thinking.https://zxll-website.wallphysics.workers.dev/enhttps://zxll-website.wallphysics.workers.dev/en/posts/hello-worldhttps://zxll-website.wallphysics.workers.dev/en/posts/hello-worldThe first post — what this blog is about.Sat, 09 May 2026 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/psychology-overviewhttps://zxll-website.wallphysics.workers.dev/en/posts/psychology-overviewMy macro-level understanding of psychological problems, along with reflections on the issues with psychological theories.Fri, 08 May 2026 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/markdown-featureshttps://zxll-website.wallphysics.workers.dev/en/posts/markdown-featuresA quick tour of the markdown features this blog supports.Tue, 21 Apr 2026 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/CPR-EPhttps://zxll-website.wallphysics.workers.dev/en/posts/CPR-EPA brief popular-science overview of cardiac electrophysiology, cardiac arrest, and first aid.Mon, 20 Apr 2026 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/talk-MBTIhttps://zxll-website.wallphysics.workers.dev/en/posts/talk-MBTIMy take on MBTI.Thu, 09 Apr 2026 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/way-of-thinkinghttps://zxll-website.wallphysics.workers.dev/en/posts/way-of-thinkingAn understanding-oriented way of thinking: build knowledge into a tree, and chase the key questions all the way down to the mechanism layer.Mon, 02 Mar 2026 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/talk-logichttps://zxll-website.wallphysics.workers.dev/en/posts/talk-logicThree Questions on Logic: What is right? What is logic? Why the lack of logical ability?Fri, 04 Apr 2025 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/badminton-1https://zxll-website.wallphysics.workers.dev/en/posts/badminton-1A light take on badminton: rackets, grip, swing, footwork, and more.Tue, 23 Apr 2024 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/probability-theoryhttps://zxll-website.wallphysics.workers.dev/en/posts/probability-theoryStarting from probability, distributions, and conditional probability, this article reviews common probability distributions and what they mean.Wed, 18 Aug 2021 00:00:00 GMThttps://zxll-website.wallphysics.workers.dev/en/posts/geometric-matrix-operationshttps://zxll-website.wallphysics.workers.dev/en/posts/geometric-matrix-operationsUnderstanding matrices through rows and columns, left and right multiplication, coordinate transformations, and the geometric meaning of systems of equations.Sat, 03 Jul 2021 00:00:00 GMT