Even if the weather and geography are right, the people must be in harmony in their moods. If the artist is consumed by various emotions and desires, even if he or she can reluctantly be made to play, the results will be less than ideal. That is why Confucius did not perform music on the day of a friend's funeral.
天時、地利有了，人若不和也不行，彈琴者最好在心情舒暢平和時彈，若有七情六慾困擾，縱然勉強一彈，成績也不會太理想，所以古代孔子每次弔喪回來，一天不弦歌，是有道理的。