Not-doing doesn't mean not taking any action, but rather that since you don't seek or scheme after anything, you are more able to spontaneously follow your nature in everything you do.
「無為」不代表什麼都不做，反倒因為你沒有刻意去追求什麼，也不會處處算計，更能順著心性和時勢，而無所不為。