zhuǎn​rù

to switch to

转入 轉入 zhuǎn//rù
to switch to verb
To change over or shift into a different state, direction, or category; to transition into.
to turn into
To change direction and enter a specific place, such as a street or an alley
to specialize in
To focus one's efforts or transition into a specific field of study or professional area

Frequency

Movie subtitles
1.55 per million appears in 1% of films
Written text
10.4 per million

Sources