He immersed himself in studying classical texts with undivided attention.
Tips
usage
Strongly positive, used to praise intense, single-minded focus on a worthy task (study, training, craft). Not for passing concentration; reserve it for sustained absorption.
mistakes
骛 (wù) not 鹜 (wù, duck). They look almost identical but 骛 has the 马 (horse) bottom, 'to gallop, to pursue.' A common handwritten and typed error is 心无旁鹜 ('no other ducks'), amusing, but wrong.
