Cheongdam e-Library is a state-of-the-art reading program optimized for language learning that has been verified worldwide.Cheongdam e-Library applied the principle of mother tongue acquisition to make children bilingual.In particular, by introducing a learning method called 5-step multi-dimensional reading, you can experience 5 times higher learning intensity.- Step 1: Eliminate learning tension by exposing key words from the book through fun games.- Step 2: Cover the text and listen to the native speaker read it to you to guess what the story is.- Step 3: Read the story by immersing yourself in it without being interrupted. Use the eBooks features freely as needed.- Step 4: Stimulate childrens speaking desire by listening to and following native speakers voices.- Step 5: Learn the rules of the language naturally through review games.*Cheongdam e-Library requires the following permissions for smooth operation.[Optional] Microphone: Permission to use the recording function in steps 3 and 4[Optional] Save: Permission to use album photos for profile photo registrationIf you do not agree to the optional permission, certain functions may not work, but you can use the Cheongdam e-Library app.If you are using a version lower than Android 6.0, you cannot individually grant the right to select, so it is recommended to check if the manufacturer of your terminal provides an operating system upgrade and upgrade to Android 6.0 or higher if possible. In addition, even if the operating system is upgraded, the access rights agreed to by the existing apps do not change, so to reset the access rights, you must delete and reinstall the already installed apps.* How to withdrawSettings > Applications > Spindle Books > Permissions > Disable Microphone/Record*Customer center phone number: 1670-9407