There is no specific difference between pain and ache in Western medicine, both refer to the feeling of discomfort in the human body. In Chinese medicine, there is a difference between pain and ache. Pain is the word for disease with the addition of the word winter, which represents the invasion of wind and cold, and the early onset of wind and cold invading the meridians of the body leading to the appearance of the corresponding symptoms, and the appearance of symptoms in the body will occur as a signal for pain to convene more qi and blood to resist the invasion of wind and cold. Pain is next to the word disease plus a canal, canal in ancient times means canal, channel, the specific meaning is in the channel by wind and cold as well as qi and blood stagnation, resulting in the corresponding symptoms such as pain or discomfort. As the saying goes, if you pass through, you don’t have pain, but if you have pain, you don’t pass through, referring to the corresponding symptoms caused by the stagnation of qi and blood as well as wind and cold after the meridians are damaged.