noun
golden rule; cardinal principle
A fundamental rule or principle that one should follow to achieve success in a particular field or activity. Often used in formal or written contexts. Compare with 黄金律, which can also mean the Golden Rule in ethics.
See also: 黄金律
彼にとって、時間厳守はビジネスの金科玉条だ。
For him, punctuality is the golden rule of business.
In this industry, putting the customer first is considered the cardinal principle.