According to Ton Tay Thein Tan's song, "Chat Gyi",
Long long ago, Chat Gyi was born in a poor family in a village
He was really helpful person in his village and always involve in every donation in his village.
He helps everybody but he is very poor.
Chatgyi secretly loves a beautiful lady in his village but she does not love him because he is poor.
Ko Chatgyi is really poor and honest guy in Ton Tay Thein Tan's song.
A few decades later, he is still single and still interested in sexy girls.
Since the world is changing and technology is improving, he become dr.chatgyi and really popular nickname on online.