eternal-flame-ad/shuang

Shuang is a web-based practice tool for learning and drilling shuangpin, a Chinese typing method that compresses two-character pinyin syllables into two keystrokes. If you've ever wanted to type Chinese faster by reducing each syllable to a single pair of keys, this project gives you a browser-based trainer to build that muscle memory. The app lets you pick from over a dozen established shuangpin schemes, including standards from Microsoft, Sogou, Xiaohe, and others. It then presents characters for you to type using your chosen scheme. You can work through characters in random order or sequentially following the Xinhua Dictionary ordering, and there's a mode that filters out polyphonic and obscure characters to keep practice focused. A toggleable keymap diagram shows where each sound maps on the keyboard, so you don't have to memorize the layout before starting. The interface is keyboard-driven: space or enter advances to the next prompt or clears your input, and Esc wipes the current entry. The primary audience is anyone learning shuangpin for the first time or switching between schemes, such as a user moving from Microsoft's layout to Xiaohe. It works on desktop browsers, iPhones, and iPads, though on mobile you're advised to use portrait orientation and the system English keyboard. There's also a WeChat mini-program version for people who want to practice inside that app. A non-technical person who wants a custom scheme can request it through the project's issues or email, since adding one requires editing JavaScript files. A notable convenience is the included Excel file for editing keyboard layout diagrams, along with exported PNG images, so someone documenting a scheme can modify the visuals without recreating them from scratch.