g    ����������������������ס������ס������Ȼ����������ų��������������񶯡�
  An unaspirated voiceless velar plosive. It is pronounced by raising the back of the tongue against the soft palate to block the air, and then putting it down to release the air. The vocal cords do not vibrate .

k    ���������������������λ��g��ͬ����Ҫʹ�����͵شӿ��г�����������񶯡�����g ���Ӧ����������
  An aspirated voiceless velar plosive. It is pronounced with the mouth in position for "g" , but explodes with a strong puff of air. The vocal cords do not vibrate.It is an aspirated equivalent of "g".

h    �������������¡�𣬽ӽ������γ�һ�����죬������������ĥ���������������񶯡�
  A voiceless velar fricative. It is pronounced by raising the back of the tongue to the soft palate to make a narrow passage for the air to be expelled with friction. The vocalcords do not vibrate.