Among all the Beijing place names of the form “X-daokou,” Wu Daokou—often jokingly called the “Center of the Universe”—is by far the most famous. Looking at the map, we can find three places called Si Daokou, one Wu Daokou, and two Liu Daokou in Beijing today. In this piece, we will examine how these “daokou” came to be.
在國內，最流行的雲服務器應該是阿里雲了。在過去的幾個月裏，我陸續使用了超過10臺阿里雲的雲服務器（ECS），和阿里雲的關係型數據庫（RDS）。但這個過程並不令人滿意，特別是阿里雲ECS默認開啓的雲盾，其糟糕的產品設計，令人難以忍受。
衆所周知，Google Fonts提供了非常多的英文字體，使得前端工程師們得以在網頁中輕鬆地使用豐富多彩的字體效果。
但中文字體卻沒這麼容易嵌入到互聯網……
經過兩週的開發，新博客終於上線了！
目前，本博客同時提供IPv4和IPv6的訪問：
AA and AAA batteries differ in size, yet both have a voltage of 1.5 V. Nickel–metal hydride (NiMH) batteries are rechargeable and come in the same sizes as AA and AAA, but their voltage is 1.2 V. Mobile phone lithium batteries, on the other hand, are often rated at 3.7 V. You may have noticed these seemingly odd numbers before. Have you ever wondered why these different types of batteries all have such fixed voltage values? Today, let’s get to the root of the question.