A More Detailed 81-Type Personality Framework

xMBTI Founder Hsin-Hang Chung

I'm Hsin-Hang Chung, founder of xMBTI

Over the past decade, I've journeyed from Jungian psychology to modern behavioral science. I discovered a critical gap: most people finish a personality test and get a label, but then ask, "So what?"

xMBTI isn't about defining you—it's about giving you a map. When you know which dimensions are "extreme" and which are "flexible (X)," you can truly design a growth strategy that fits you.

"Personality isn't an excuse—it's a tool for designing your life."

Why I built xMBTI

I’ve always been curious about one thing:

Why do some people seem to “find the right path” early on,

while others work just as hard yet keep going in circles, hitting walls, and getting stuck?

Over the past decade, I started with Jung’s theories and explored “personality, motivation, and behavioral patterns,”

not just through reading, courses, and research, but by actually applying it to my own life, work, relationships, and business management.

Traditional 16-type personality systems use a more binary approach:

One group here, another group there, constantly sorting people into different boxes.

After a while, you’ll find that while it provides direction, it falls short in many nuanced situations.

So what I’ve done is compile years of practical experience and lessons learned into a “more usable” map:

Not just telling you “who you are” and stopping there, but showing you “since you’re roughly like this, here’s how to adjust more efficiently.”

When it comes to personal growth, I see it like character development:

With a path, you’re efficient; without one, you keep repeating the same mistakes.

What xMBTI aims to do is compress the accumulated wisdom into a clear framework,

helping you turn the abstract “understanding yourself” into concrete choices you can make every day.

About me and CTER

I’m Hsin-Hang Chung, and I’m also the person responsible for CTER Industry, the company behind xMBTI.

Over the years, I’ve applied research on personality and motivation in several areas:

Self-growth and career transitions

Communication in intimate relationships

Team division of labor, talent selection, and company system design

For me, personality isn’t for labeling or making excuses—

it’s a tool for designing “how you work best, how you interact best, and how you rest best.”

Now, xMBTI’s website, products, and content are operated by CTER Industry;

the related online courses, explanations, and teaching will also be personally led by me,

ensuring these aren’t just “beautifully explained theories” but actually integrate into your daily routines and decisions.

Why add the "Intermediate (X)" dimension

In real life, most people don’t exist at the extremes.

You might simultaneously be in this state:

Enjoying socializing, yet also needing quiet time to recharge

Valuing logic highly, yet also caring about feelings and atmosphere in relationships

Making plans, yet also willing to adjust direction when good opportunities arise

If we use the traditional “either A or B” binary approach,

many people who are naturally in the “middle zone” get forced into one side,

and the resulting descriptions and advice end up slightly off.

So in xMBTI, I directly added a middle option to all four dimensions: “Intermediate (X)”:

Leaning toward A

Intermediate X

Leaning toward B

Each of the four dimensions has three states, which combine to form:

3 × 3 × 3 × 3 = 81 types.

This approach has several effects:

Test results more closely match your actual everyday behavior, not your idealized self

Reports can provide more specific, actionable advice for career, relationships, learning, and intimate relationships

You can more precisely understand: in what situations you lean which way, rather than being defined by a single label

How to use this framework

The focus of this framework isn’t “getting a type,”

but “what you’re going to do with it next.”

A simple usage path could look like this:

First, identify your 81-type and four-dimension placement

See clearly which region you’re in, rather than just memorizing a code.

Read the report, aligning abstract preferences with concrete situations

The report will cover:

Your behavioral traits and natural reactions

Advantages that are easier to leverage

Blind spots and patterns that tend to get stuck and repeat

How to make micro-adjustments more efficiently in career, interpersonal collaboration, and emotional relationships

Schedule the suggestions into your action rhythm

For example:

Set a few “checkpoints” to see if you’ve fallen back into old patterns

Create simple templates for common situations (writing emails, meetings, self-reflection, priorities) to reduce the cost of starting from scratch each time

Break big topics into small steps, turning growth into a manageable process rather than relying on willpower every day

Overall, the goal isn’t to turn you into someone else,

but to help you develop more stability, choice, and control on top of your existing temperament.

Intro videos

If you prefer to "listen and watch" first to understand a concept,

I'll also prepare a short introductory video,

explaining why we created the 81-type system, how we view personality and behavior, and how to use it in real life,

all explained in plain language.

Once the videos are live, you'll find links here,

and if you're interested, feel free to watch while comparing with your own experience.

About the name "xMBTI"

Finally, a small detail for those curious about the name:

xMBTI’s full name is eXpanded Mind Behavior Typology Index.

If you’re willing to take the time to complete the test, read the report, and try applying it,

I hope this framework can help you save some detours in the choices you make over the next few years.