He visited the country to promote the drama as part of his Asia tour .
The drama 's lead star , Song Joong - ki , was invited to Thailand by Yuthasak Supasorn , governor of the Tourism Authority of Thailand .
Song Joong - ki visited the country to promote the drama as part of Song Joong - ki 's Asia tour .
The drama 's lead star , Song Joong - ki , was invited to Thailand by Yuthasak Supasorn , governor of the Tourism Authority of Thailand .