Sincerity and Devotion in Chinese / Japanese...

至誠 is the idea that you enter into something with the utmost sincerity and fidelity. Ideas such as devotion, honesty, and “one's true heart” are also contained in this word.

至誠 is a universal word as the Chinese, Japanese Kanji, and Korean Hanja are all identical.

忠誠 is the written form of loyalty that is universal in Chinese, Japanese Kanji, and old Korean Hanja.

Loyalty is staying true to someone. It is standing up for something you believe in without wavering. It is being faithful to your family, country, school, friends, or ideals when the going gets tough and when things are good. With loyalty, you build relationships that last forever.

Notes:

1. There is also a Japanese version that is part of the Bushido Code which may be more desirable depending on whether your intended audience is Japanese or Chinese.

2. This version of loyalty is sometimes translated as devotion, sincerity, fidelity, or allegiance.

See Also:  Honor | Trust | Integrity | Sincerity

While 真心 literally reads as “true heart” or “genuine heart,” the understood meaning is sincerity, devotion, sincere, or heartfelt. Some will extend the meaning to be like “true love.” It's the idea of doing something or treating someone with genuine feelings.

真心 is valid and has the same meaning in both Chinese characters and Japanese Kanji.

Note: While not too common, this can be the female given name “Mami” in Japanese.