费工夫 | fèi gōng fu | to spend a great deal of time and effort / (of a task) demanding / exacting | |
苛 | kē | severe / exacting | |
从难从严 | cóng nán cóng yán | demanding and strict (idiom) / exacting | |
秋荼密网 | qiū tú mì wǎng | flowering autumn grass, fine net (idiom) / fig. abundant and exacting punishments prescribed by law |