[main function]
* You can take a handful of HD high-definition lectures on mobile.
* One-time login makes it easier to listen to lectures.
* You can take classes in clear quality without interruption in Wi-Fi or 3G available areas by streaming method.
* Download (You must be connected to the network to log in and save progress.) Reduces the burden on smartphone data in areas where Wi-Fi is not available.
* With double-speed playback support, you can take classes twice as fast, saving time.

1. Attending lectures
- You can access ‘My Classroom’ by logging in with your registered member ID and password.
- If you do not have an account, please access the Son Pyeong Hana homepage and create an account before using it.
- With one login, you can conveniently take lectures that you can listen to on the site, as they are on your smartphone.
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2. Listening to lectures
- Lectures can be taken in two ways: streaming and downloading.
- Supports lecture view and double speed function.
- Supports lecture pause and release function.

※ Information on access rights

[Required access rights]
- Microphone: Used to prevent recording during lecture playback
-Storage space: used for downloading lectures
- Phone: Used to check device information