2. Kang: This word first appeared in Oracle Bone Inscriptions in Shang Dynasty. The original meaning of the word "Kang" is unclear, and Shuo Wen Jie Zi thinks that "Kang" is the body of "bran". Others believe that "health" originally meant peace and harmony. The extension of peace means strong and healthy. And then extended to wealth and vastness.
3. Shun: This word first appeared in the bronze inscriptions of the Western Zhou Dynasty. Its original meaning means going in the same direction, and it also means that things are going smoothly and in line with one's own wishes.