As a kid, I often heard the word "Father of the land" but I still don't know what it means, but now I know that the 'Father of the land' mean. Thailand's venerated king, Bhumibol Adulyadej, the father of Thailand and all people, the world's longest-reigning monarch, has died at the age of 88. King Bhumibol passed away at Bangkok's Siriraj hospital.