执着 (zhí zhuó): chuyên dụng

He persistently pursues his musical dream, never giving up even when encountering great difficulties.

This scientist is very dedicated to research and spent ten years finally finding a solution to the problem.

Her dedication to environmental protection moved many people, and everyone joined her team one after another.

He was stubbornly attached to his own views and unwilling to listen to others' opinions, and as a result made a big mistake.