1, sugar-coated shells come here, eat the sugar-coated shells and throw them back.

2. All living things are bitter, but for the people inside, things are still sweet. Or a sweet sugar-coated cannonball.

3. It is the most precious revolutionary quality to advance in the mire without being contaminated and corroded by the sugar-coated shells of the bourgeoisie.

Sugar-coated cannonball, an idiom in China, means cannonball wrapped in sugar. Metaphor is an offensive means that people are willing to accept after clever disguise. Metaphor means to corrode, woo and pull people into the water, also known as sugar-coated shells.