Based on my knowledge of figurative language, the bold-faced section is an example of oxymoron technique.
An oxymoron is known to be a kind of a figure of speech that is known to often juxtaposes with the use of opposing meanings that is said to be seen inside of a word or phrase that makes a self-contradiction notion.
Note that An oxymoron can be used as a kind of a rhetorical device to show or depict a rhetorical point or to show also a paradox.
Hence, Based on my knowledge of figurative language, the bold-faced section is an example of oxymoron technique.
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