The nine virtues of a gentleman from the Analects (论语lúnyǔ), involving clarity of sight, keenness of hearing, gentleness of expression, respectfulness of demeanor, sincerity of speech, conscientiousness in work, inquiry when in doubt, caution in anger, and fairness in the face of gain
to think deeply
(literary) To think over something repeatedly or from many different angles.
Nine Reflections
(literary) Title of a section in the 楚辞chǔcí by Wang Yi of the Eastern Han dynasty, written in the style of the 九章jiǔzhāng to commemorate Qu Yuan.