'The Origin of Viet Clan' is the valuable works with a lot of discoveries that have not been mentioned before.' - The Most Venerable Thich Duc Nhuan 'This is one of the most valuable and greatest works.' - Nguyen M Le, French Academy 'Pham's hard-work on his research of The Origin of Viet Clan has helped us be to be able to build a stronger knowledge of our old-age culture which became Chinese's culture then.