 His father had also asked embassy staff abroad to pledge loyalty to his son.There have also been reports that citizens in North Korea were encouraged to sing a newly composed "song of praise" to Kim Jong-un, in a similar fashion to that of praise songs relating to Kim Jong-il and Kim Il-sung.Later, in June, Kim was reported to have visited China secretly to "present himself" to the Chinese leadership, who later warned against North Korea conducting another nuclear test.