内行

• Pinyin: nèi háng
• Hanzi breakdown: 内 = 冂 + 人 — inside; 行 = a pictograph of a crossroads — trade, profession, to walk/travel

Meaning

An expert; someone with genuine insider knowledge and practical experience in a particular field.

Describes a person who has real expertise and experience in a field, as opposed to an 外行 (layperson/outsider). Can also function as an adjective meaning 'knowledgeable' or 'expert.' Common in discussions of craftsmanship, professionalism, and evaluation.

Examples

1. 一眼就能看出这幅字的问题所在，她真是个内行，一般人根本注意不到这些细节。 She could spot what was wrong with the calligraphy at a glance—she’s a true expert, and most people wouldn’t notice those details at all.
2. 外行看热闹，内行看门道，不同的人从这场演出中会获得截然不同的体验和感悟。 Outsiders watch for the spectacle; insiders watch for the craft. Different people will get completely different experiences and takeaways from the same performance.
3. 这种复杂的合同条款需要内行来审核，普通人很难发现其中潜藏的法律风险。 These complicated contract terms need an expert to review them; most people would have a hard time spotting the legal risks hidden inside.

Usage Guide

Context: professional assessment, craftsmanship, expertise, daily life

Tone: respectful/neutral

Do Say

• 他一开口就提出了核心问题所在，果然是个内行，几句话就把大家绕了好久的关键点点透了。(As soon as he spoke he identified the core issue — a true expert indeed: in just a few sentences he clarified the key point everyone had been circling around for a long time.)
• 选购古董字画这种事，最好请内行朋友陪同，否则极易被蒙骗，花大价钱买到赝品。(When buying antique calligraphy and paintings, it's best to bring along an expert friend; otherwise it's very easy to be deceived into paying a high price for a forgery.)

Don't Say

• 用'内行'描述仅仅了解基础知识的人 — 内行 implies genuine professional-level expertise and experience; for someone who merely knows the basics, use 懂行的 or 了解一些

Origin & History

内(inner/inside) + 行(profession/trade/field). Together: one who is inside the trade — a true practitioner with insider knowledge.

Cultural Context

Generation: All ages

Social background: Universal