What does nian nian nian forget mean?

Explanation: Nian Nian: thinking about someone all the time. Keep the description in mind and never forget it.

From: "The Complete Book of Zhu Xi·The Analects": "It is said that he is loyal, sincere and respectful, and never forgets it."

Example: This is what I feel is engraved in my heart, and ~ is also.

◎Volume 3 of "Du Shi Yan Zhi" by Anonymous Qing Dynasty

Grammar: more formal; used as a predicate; refers to always keeping in mind

Please adopt it.