Literature Reference: 行一不义，杀一不辜，而得天下，皆不为也。——《孟子·公孙丑上》 To commit one unjust act or kill one innocent person, even if it would bring the world under one's rule, is something one should never do. Source from 'Mencius: Gongsun Chou I'.
行: Proficient in a certain matter, it generally signifies smooth progress in all affairs, with the character "Zhi" carrying auspicious connotations.
一: To signify the beginning, to embody the entirety, and to represent the pinnacle of excellence and perfection.
Meaning: To act with integrity and remain steadfast in one's principles.