The radical of "Li" is "Xian". The word "Li" first appeared in Oracle Bone Inscriptions in Shang Dynasty. The ancient "Li" shape was used to cut grain with a knife to compare the sharpness of the knife. The original meaning refers to the sharpness of the sword. The sharp blade leads to fast cutting speed, which can be extended to fast cutting speed. For a knife, the sharper the better, so it means smooth and convenient. As long as things go well, it also means interests, benefits, profits, etc. From smooth and auspicious, it can be extended to "beneficial to ...".

Li Yanyi 1, sharp; Sharp (as opposed to blunt): a sharp blade, claw.

2. fluency; Convenience: unfavorable, unsuccessful and blunt.

3. Benefits (relative to "harm and disadvantage"): advantages and disadvantages, advantages and disadvantages.

4. Profit or interest: profiteering, small profits but quick turnover, and the principal and profit are clear.

5. Make it beneficial: benefit the country and the people, without selfish interests, and patent others.