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.