Author: tangwudi

I am a poor loser who really likes to study technology and sing. Although I have nothing to do now, I used to be a senior IT practitioner with 19 years of work experience: network engineer of an integration company in 2002, pre-sales engineer of a general agent in 2007, and sales engineer of a foreign company in 2011. I have grown up with the development of the domestic IT industry. The key is that I can sing well, which is so annoying. My main hobby now, in addition to studying singing, is to study the "True Home Data Center" solution. The ultimate goal is to allow anyone to use the idle hardware at home to build and publish their own website in minutes (a little exaggerated). For friends who pursue it, they can also achieve a certain level of security protection through various technical means (mainly free), and finally realize: everyone can have a website.

248 Posts

The third optimization of the blog architecture: WordPress dual-active node adjustment and database import considerations.
1. The Reason for the Third Optimization of the Blog's Active-Active Architecture A few days ago, I was preparing to perform a routine maintenance operation on the Mac mini node in the blog's active-active architecture: upgrading the Portainer version. However, a seemingly insignificant small problem ultimately caused the entire node…
Awakening of the Voice (Part 5): The Original Key Myth—Why Sometimes Singing in a Different Key Can Better Express Your Own Voice
1. When we get used to "the original singer is the standard," we forget whose voice it is. Most people, when they start singing, implicitly have an "invisible standard" in their minds—whatever key the original singer sings in, we should sing in the same key. It seems that only by completely copying the original can we be recognized…
Awakening of the Voice (Part 4): The Natural Gap Between the Formal Vocal System and Self-Taught Singing – Differences in Language, Method, and Structure
1. Introduction Having recently achieved initial success in "larynx control," I've been reflecting on the detours I've taken over the past two years in researching "singing"—it wouldn't be an exaggeration to say it was a winding, circuitous road. The fundamental reason for these many detours was that I was initially misled by the teachings of various online "vocal teachers"...
The Awakening of Sound (Part 3): The Misconceptions and Scientific Interpretation of "High Position"
1. Entering the 'High Position': A Mythologized Concept of High Notes Many people who have studied singing and watched countless instructional videos are familiar with the term "high position." A quick search on Bilibili (a Chinese video-sharing website) for "high position" yields a screen full of tutorials, each titled "Unlocking the Secrets to High Notes," "Singing High Notes Easily..."
Why is WordPress more prone to "Error establishing database connection" on entry-level VPS? A systematic analysis from database to architecture.
1. Introduction I've been using a base-level VPS (US$39/year) from Racknerd's Chicago data center to build the "read-only node" in my blog's active-active architecture for about half a year now. Over this time, the VPS's overall stability has been quite good…
The Awakening of Sound (Part Two): The Misunderstood Sound—The Illusion of High Notes and the Hallucination of Low Notes
1. Introduction In the past two years of dedicated study of singing, I encountered a very thorny problem: my ear's ability to distinguish sounds couldn't keep up with my body's vocal production. Professional vocalists, upon listening to an original recording, can often immediately determine exactly how high a high note is and whether a low note is truly that deep; but for someone like me…
Why did I migrate from self-built Umami to Umami Cloud? — A discussion of the trade-offs between self-deployment and managed services
1. Introduction In previous articles, I wrote two about building your own Umami: one on setting up version 1.33.1 (see article: Docker Series: Building a Website Traffic Monitoring System Based on Umami), and the other on setting up version 2.11.3 (see article: Home Data Center…
A Systematic Review of Buddhist Theory (Part Two): The Tree of Awakening—The Development of Buddhist Theory: Dependent Origination, the Five Aggregates, and Causality
1. Introduction In previous articles (see: Spiritual Nourishment Series: A Systematic Review of Buddhist Theory (Part 1): From Interest to Rational Understanding of Buddhism), we discussed the compatibility of Buddhism and science—although their paths differ, both use observation as a method and awareness as their ultimate goal. Science explores the laws of the world outward, while Buddhism…
Awakening of the Voice (Part 1): The Instrument Within the Body—Rediscovering the Essence of Singing
1. Introduction I've loved singing since I was little. The first song I seriously learned, I remember, was "Green Apple Paradise" by the Little Tigers. To memorize the lyrics, I listened to it on the radio and wrote it down line by line in my notebook—much more self-disciplined than I was doing dictation at school. However, I've never…
A Systematic Review of Buddhist Theory (Part 1): From Interest to Rational Understanding of Buddhism
1. My Starting Point: Why I Choose to Start with Buddhism? Human beings are inherently contradictory: they can be powerful enough to transform mountains and rivers, undertake massive construction projects, explore the heavens and the seas, even leaving footprints in space; yet they can also be fragile enough to fall into self-pity, depression, or even resentment due to insomnia, a word of blame, or a period of loneliness…
       

👋 Welcome to "Invincible Personal Blog"“

This section will focus on long-term exploration in the following areas:

🧱 Building Personal Digital Infrastructure and Blog Systems
☁️ Cloudflare and Network Architecture Practices
🧠 Exploring AI and Knowledge Systems
🛡️ Network security and access optimization
🎵 Music and Sound Cognition
👁️ Cognitive Perspective and Worldview