to piggyback on Kim Jong-un, 爬上金正恩的背

CNN.com

KCNA/URIMINZOKKIRI
The officer appeared to be overcome with emotion as he climbed onto his leader's back
North Korea: Who would dare to piggyback on Kim Jong-un? - BBC News
http://www.bbc.com/news/world-asia-39361984

KCNA/URIMINZOKKIRI
朝鮮火箭發動機試驗後：誰敢爬上金正恩的背？ - BBC 中文网
http://www.bbc.com/zhongwen/trad/world-39376802

The Independent