- There are some who have built a character just like a cherry: outwardly soft, but inside there is hard stone;
- there is another character which is like a grape: it is outwardly soft and inwardly soft;
- there is also a walnut character, which is outwardly hard and inwardly soft;
- and there is a character like a pomegranate: outwardly hard and inwardly with hard pits.
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