削发

xuē fà wéi sēng

削发为僧

shave one's head and become a monk

xuē fà míng zhì

削发明志

cut one's hair to show one's high ideals

xuē fà wéi ní

削发为尼

take the tonsure and become a nun

tā xiǎng xuē fà lái wàng jì suǒ yǒu fán nǎo

她想削发来忘记所有烦恼。

She wants to cut her hair to get over those issues.