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khổng
khổng - 【emptiness, hollow, hole, opening】*

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Start Learning Chu Nom!
Choose a grade to start with. The grades are sorted by frequency, so that you will be learning the most common characters in Grade 1 which covers about 35% of contemporary Vietnamese writing. With Grade 2 you can achieve about 60% coverage, and with Grade 3 it is about 75% with less than 500 characters.

Recent Changes

• 08/19/2017 - IDS data added
  Ideographic description sequences are now available for each character. All IDS data from https://github.com/cjkvi/cjkvi-ids.
• 01/28/2017 - Phonetic annotation
  Pronunciations are now available as phonetic annotation, it can be used on flash cards for learning purposes.
• 07/09/2015 - Handwriting on Mobile Devices
  The handwriting app now does work on smartphones and tablets, too.
• 08/11/2014 - Type Chu Nom in Search Box
  You can now type Chu Nom in the search box. Use the number keys or click/touch on the character to select from the candidate list. This also works on android mobile devices.
• 01/19/2014 - Radical Strokes Index
  You can now search by radical/strokes.
• 12/18/2013 - Mobile Version of Online Editor
  On mobile phones you are now asked if you want to use the new mobile version of the online editor. It has fewer features but it allows basic writing of Nôm characters on mobile phones.
• 12/12/2013 - Easier Compound Writing
  In the text fields it is now easier to write compounds. E.g. if you try to type "cảmơn" it does not become "camởn" as before. I had to hack into the awsome vietUni.js by nthachus.
• 11/27/2013 - New Languages
  The website is now available with interfaces in Vietnamese and German. Additionally the Vietnamese interface exists in Latin script and in Nom-Script. Despite these changes the main language will remain English.
• 11/27/2013 - Levels introduced
  As the number of characters on this site has increased I have introduced a level system. So the level pages are now smaller and load faster than the previous character index.
• 11/24/2013 - New Frequency Data
  I have updated and improved the Frequency Data. The most frequent word is now "吧 và" and not "羅 là" as before. Some homonyms have been resolved to different frequencies instead of the same frequency for all characters with the same pronounciation. The frequency data is based on news articles of Vietnamese websites.