verb, idiomatic
to do whatever one feels like doing; to do as one pleases
他做什麼事都由着性子來，從來不考慮後果。
他做什么事都由着性子来，从来不考虑后果。
tā zuò shén me shì dōu yóu zhe xìng zi lái ， cóng lái bù kǎo lǜ hòu guǒ ． He just does what he wants to do and never thinks about the consequences.