The cache is not at the posted coordinates. Do not look there.
This is a BONUS CACHE for my Adventure Lab Cache, "Mugunghwa Park". The first thing you need to do to find this mystery cache is to download and install the Adventure Lab mobile app for your smart phone. And then, search and run my Adventure "Mugunghwa Park" using the app on your smartphone. Another way to open my Adventure Lab cache is to click on the Adventure Lab icon below. Play and complete the Adventure "Mugunghwa Park" to get the actual coordinates for this mystery cache.
* How to find an Adventure Lab *
Download the free Adventure Lab app. ---> Log in with your Geocaching.com account. ---> Select a nearby Adventure from the map or list. For private Adventures, use your phone's camera or QR code scanner to open the Adventure in the app. ---> Navigate to the Adventure location and follow the instructions in the description.
Happy caching !