MBTI describes personality along four dimensions: E/I (Extraversion/Introversion, where energy goes), S/N (Sensing/Intuition, how you take in information), T/F (Thinking/Feeling, what you decide by), and J/P (Judging/Perceiving, your pace of life). Each is a two-way choice; four combined give exactly 16 types.
Analysts NT (Intuition + Thinking): value logic and possibility, love taking systems apart and improving them.
Diplomats NF (Intuition + Feeling): value meaning and values, skilled at empathy and vision, attentive to what drives people.
Sentinels SJ (Sensing + Judging): value order and duty, reliable and practical, steady executors.
Explorers SP (Sensing + Perceiving): value experience and flexibility, adapt on the fly, enjoy the realness of the moment.
Memorizing 16 type names is low-efficiency. The better method: when you meet a type, see which temperament it falls in, and you can roughly guess its thinking and relating style. "N" types focus on future and possibility; "S" types on reality and detail. "T" decides by the matter; "F" by how people feel.
① Use it to understand difference, not rank. Every temperament has strengths and blind spots; none is superior.
② Read your tendency distribution. Many are not pure E or pure I, but a point on a spectrum — no need for black-and-white.
③ Treat it as a starting point. The type describes a tendency, not a boundary; the real you is far richer than four letters.
On XinYou, you can use the MBTI test to get your four-dimension tendencies and type, then map them onto this framework to understand yourself and the people around you.