心无旁骛

Explanation: Next; another; greedy pursuit. The pursuit of no other mind to describe mind focused, dedicated. 　　Usage: The main predicate; as predicate, attributive, adverbial; with compliment 　　Source: Bing Xin, "On the envelopes, letterheads," there are many like me, in writing, when, like a blank sheet of paper or only with round after round, unfettered, focused exclusively on writing a go on. "