Zhuing is a free Chrome add-on developed by bestian that aims to enhance the Wikipedia editing experience. This add-on provides users with a convenient way to toggle CSS by simply tapping on an action button. With Zhuing, users can easily add the Zhuyin annotation to Wikipedia articles.

One of the key features of Zhuing is its integration with the [源樣注音明體] extension. Users are required to install this extension before using Zhuing. Once installed, users can enjoy the benefits of Zhuing and effortlessly add Zhuyin annotations to Wikipedia articles.

Overall, Zhuing is a valuable tool for Wikipedia editors who wish to improve the readability and accessibility of articles by adding Zhuyin annotations. With its user-friendly interface and seamless integration with the [源樣注音明體] extension, Zhuing simplifies the process of enhancing Wikipedia articles.