To not differentiate/pick between methods
Refers to using any method in order to achieve one's goal
Negative
By hook or by crook
None
This is an HSK chengyu
《三闲集》(Sān Xián Jí), a work by the great modern author 鲁迅 (Lǔ Xùn)
This chengyu is from a line in the work listed in the "Origin" section above