liǎo / jiě / yí / gè / rén / de / qíng / xìng / yǒu / zhù / yú / lǐ / jiě / tā / de / xuǎn / zé / hé / xíng / wéi了解一个人的情性,有助于理解他的选择和行为。Understanding a person's nature helps us understand their choices and behavior.