Hi Lily7! Thank you for your question. Are you asking how to generally type in traditional Chinese, or how to train traditional charaters using the trainchinese app?

In the trainchinese app, under Settings, Chinese preference, you can select either of the four based on your preference:

- Simplified

- Traditional

- Both: Simplified First

- Both: Traditional First

Hope this is helpful! Please let us know if you have more questions.