Simplify the following text for a Grade 6 native English-speaking person.
Original: In March 2006 , Joubert published his biography , Brian Joubert : le Feu sur la Glace ( Brian Joubert : the fire on ice ) , in French .
Simplified: Joubert beat him at the 2004 European Championships . Joubert then went on to place 2nd at Worlds , winning his first World medal .