知错能改

知 = 口 + 矢 : Mnemonic symbol: Francis Bacon is attributed to have stated "scientia potentia est", "knowledge is power". I'll thus represent 知 by Francis Bacon. Francis Bacon (知) and James II of England (zh) are playing darts (矢) in front of the space station (Ø1). Because they lack a dart board they just use a mandarin (口).

错 = 昔 + 钅 : Kitty Cat just finished polishing her golden harpoon in the observatory's bathroom, but afterwards she made the terrible mistake of dropping her milkshake on it. Now she'll have to polish it all over again.

能 = 匕 + 厶 + 月 : Mnemonic symbol: bicorne hat.

能 = 匕 + 厶 + 月 : Napoleon and the moon are fighting over who's the real Napoleon in the engine's kitchen. They both wield a ladle each. During the battle, Napoleon destroys the moon's fake nose, while the moon dents Napoleon's bicorne hat.

改 = 己 + 攵 : Guy Fawkes rose to power in the airplane and the first thing he wants to do is to change the throne. He used a butcher's hook to scratch the jewels out of the golden throne. Now he uses a sledgehammer to change the throne into a new form, that is, a pile of garbage.