His colleagues were purged. Why was he able to send off the two leader?

as the last marshal of the Korean people's army,
and Li Yixue stood firmly on Kim Il-Sung's side in all his political struggles,
and his colleagues were purged,
and he sent off his two leader in a lifetime.
North Korea ranks system complex,
there are Shuai,
will,
school,
Wei,
Shi,
soldiers,
6,
a total of 23.
The handsome officer into the Grand Marshal,
marshal,
marshal of the three level,
and marshal marshal of Democratic People's Republic of Korea and the Korean people's army of marshal.
The former only awarded Kim Il-Sung,
Kim Jong-il,
Kim Jeong-eun three,
Wu Zhenyu,
Cui Guang,
Li Yixuesan,
the only person awarded.
On November 8,
2015,
the Korean Central News Agency released the death of Li Yixue,
the people's army marshal.
After Li Yixue's death,
North Korea had no people's army marshal