He is improving his piano skills by playing etudes every day.

He is a Taiwanese, and he has a deep understanding of Japanese culture.

I set aside time for self-practice every day.

I study Japanese every day using a workbook.

His family's crest tells the story of ancient history.

He cannot read the letter because he is illiterate.

He found a solution to the problem through a cycle of answering his own questions.

He found a solution by repeatedly answering his own questions.

He is a specialist in that field.

He studied under a famous painter.