镌心铭骨

Explanation: Juan: sculpture. Agreed with the "unforgettable." Describe never forget never forget. 　　Source: Ming Lu mining "Pearl of the mind by the shadow of" drifting left Lake House, the Netherlands, thoughtful solutions to push food clothing, knowing ashamed negative; and load boasts Dengyun Road, Tong Fu Jiaonv willing to teach, this heart of Ming Tak Juan bone. "