It is a good thing that they account for 10% of the total population.
They take a steady approach, ensuring that things are done to the highest standard — and often going well beyond what is required.
Therefore, once they are used and unable to vent their strong feelings, they are very likely to backfire.
Although they can't show it, this pain may be trapped in their hearts, showing fatigue and chronic gastric dysfunction.
If someone breaks the rules, they will become sad and embarrassed.
In some cases, they will have great emotional needs, but they will hide their true feelings in front of others.