Lo left ATV for rival TVB .
Lo 's career did not bloom until 1996 , Lo he was cast in the series Old Time Buddy in 1997 and Secret of the Heart in 1998 .
Lo left ATV for rival TVB , but his career did not bloom until 1996 , when he was cast in the series Old Time Buddy in 1997 and Secret of the Heart in 1998 .