Choi Jong-hwan hadn't burnt the Geumkangsan.
On the latest episode of the SBS drama "Saimdang: Light's Diary", Seo Ji-yoon (Lee Young-ae) met the members of RAD.
She found out RAD wasn't an individual but a group and told them she didn't know where to start. The RAD told her it was best for the fake and the real one to be released at the same time, but it wouldn't hurt to have only of them too.
They then told her the one that Min Jeong-hak (Choi Jong-hwan) burnt may be fake and that she should look for the real one.